Morse, Marston Bilinear functionals over \(C \times C\). (English) Zbl 0041.42901 Acta Sci. Math., Szeged 12 B, 41-48 (1950). PDFBibTeX XMLCite \textit{M. Morse}, Acta Sci. Math. 12, 41--48 (1950; Zbl 0041.42901)
Stampacchia, G. Sopra una classe di funzioni di due variabili. Applicazioni agli integrali doppi del calcolo delle variazioni. (Italian) Zbl 0041.42802 Giorn. Mat. Battaglini, IV. Ser. 79, 169-208 (1950). PDFBibTeX XMLCite \textit{G. Stampacchia}, Giorn. Mat. Battaglini, IV. Ser. 79, 169--208 (1950; Zbl 0041.42802)
Fox, C. An introduction to the calculus of variations. (English) Zbl 0041.42801 New York: Oxford University Press. VIII, 271 p. (1950). PDFBibTeX XML
Ehl’sgol’ts, L. E. Abschätzung der Anzahl kritischer Punkte. (Russian) Zbl 0041.22502 Usp. Mat. Nauk 5, No. 6(40), 52-87 (1950). PDFBibTeX XMLCite \textit{L. E. Ehl'sgol'ts}, Usp. Mat. Nauk 5, No. 6(40), 52--87 (1950; Zbl 0041.22502)
Ehl’sgol’ts, L. E. Eine Abschätzung für die Anzahl der singulären Punkte eines auf einer Mannigfaltigkeit vorgegebenen dynamischen Systems. (Russian) Zbl 0041.22501 Mat. Sb., N. Ser. 26(68), 215-223 (1950). PDFBibTeX XMLCite \textit{L. E. Ehl'sgol'ts}, Mat. Sb., Nov. Ser. 26(68), 215--223 (1950; Zbl 0041.22501)
Lavrent’ev, M. A.; Lyusternik, L. A. Lehrgang der Variationsrechnung. 2. umgearb. Aufl. (Russian) Zbl 0041.22403 Moskau-Leningrad: Staatsverlag für technisch-theoretische Literatur. 296 S. (1950). PDFBibTeX XML
Nickel, K. Lösung eines speziellen Minimumproblems. (German) Zbl 0040.34801 Math. Z. 53, 21-52 (1950). PDFBibTeX XMLCite \textit{K. Nickel}, Math. Z. 53, 21--52 (1950; Zbl 0040.34801) Full Text: DOI EuDML
Magenes, Enrico Sul minimo relativo degli integrali di Fubini-Tonelli. (Italian) Zbl 0040.34701 Giorn. Mat. Battaglini, IV. Ser. 79, 144-168 (1950). PDFBibTeX XMLCite \textit{E. Magenes}, Giorn. Mat. Battaglini, IV. Ser. 79, 144--168 (1950; Zbl 0040.34701)
Morse, Marston; Transue, William A calculus for Frechet variations. (English) Zbl 0040.05801 J. Indian Math. Soc., n. Ser. 14, 65-117 (1950). PDFBibTeX XMLCite \textit{M. Morse} and \textit{W. Transue}, J. Indian Math. Soc., New Ser. 14, 65--117 (1950; Zbl 0040.05801)
Tonelli, Leonida Nuove ricerche su una speciale classe di problemi di calcolo delle variazioni. (Italian) Zbl 0040.05703 Riv. Mat. Univ. Parma 1, 125-156 (1950). PDFBibTeX XMLCite \textit{L. Tonelli}, Riv. Mat. Univ. Parma 1, 125--156 (1950; Zbl 0040.05703)
Mancill, Julian D. Identically non-regular problems in the calculus of variations. (English) Zbl 0040.05702 Rev., Ser. A, Univ. Nac. Tucuman 7, 131-139 (1950). PDFBibTeX XMLCite \textit{J. D. Mancill}, Rev., Ser. A, Univ. Nac. Tucumán 7, 131--139 (1950; Zbl 0040.05702)
Cesari, Lamberto Problemi di calcolo delle variazioni e questioni connesse. (Italian) Zbl 0040.05701 Riv. Mat. Univ. Parma 1, 293-304 (1950). PDFBibTeX XMLCite \textit{L. Cesari}, Riv. Mat. Univ. Parma 1, 293--304 (1950; Zbl 0040.05701)
Mikhlin, S. G. Variationsmethoden für die Lösung von Problemen der mathematischen Physik. (Russian) Zbl 0040.05601 Usp. Mat. Nauk 5, No. 6(40), 3-51 (1950). Reviewer: J. Kravtchenko (Grenoble) MSC: 49S05 PDFBibTeX XMLCite \textit{S. G. Mikhlin}, Usp. Mat. Nauk 5, No. 6(40), 3--51 (1950; Zbl 0040.05601)
McShane, E. J. A metric in the space of generalized curves. (English) Zbl 0039.11302 Ann. Math. (2) 52, 328-349 (1950). PDFBibTeX XMLCite \textit{E. J. McShane}, Ann. Math. (2) 52, 328--349 (1950; Zbl 0039.11302) Full Text: DOI
Davies, E. T. On the second variation of the volume integral when the boundary is variable. (English) Zbl 0039.11301 Q. J. Math., Oxf. II. Ser. 1, 248-252 (1950). PDFBibTeX XMLCite \textit{E. T. Davies}, Q. J. Math., Oxf. II. Ser. 1, 248--252 (1950; Zbl 0039.11301) Full Text: DOI
Faedo, Sandro Sulle condizioni di Legendre e di Weierstrass per gli integrali di Fubini-Tonelli. (Italian) Zbl 0039.11201 Ann. Sc. Norm. Super. Pisa, II. Ser. 15, 127-135 (1950). PDFBibTeX XMLCite \textit{S. Faedo}, Ann. Sc. Norm. Super. Pisa, II. Ser. 15, 127--135 (1950; Zbl 0039.11201) Full Text: Numdam EuDML
Magenes, Enrico Sulle equazioni di Eulero relative ai problemi di calcolo delle variazioni degli integrali di Fubini-Tonelli. (Italian) Zbl 0039.11102 Rend. Sem. Mat. Univ. Padova 19, 62-102 (1950). PDFBibTeX XMLCite \textit{E. Magenes}, Rend. Semin. Mat. Univ. Padova 19, 62--102 (1950; Zbl 0039.11102) Full Text: Numdam EuDML
Magenes, Enrico Un’osservazione sulle condizioni necessarie per la semicontinuita degli integrali di Fubini-Tonelli. (Italian) Zbl 0039.11101 Rend. Sem. Mat. Univ. Padova 19, 44-53 (1950). PDFBibTeX XMLCite \textit{E. Magenes}, Rend. Semin. Mat. Univ. Padova 19, 44--53 (1950; Zbl 0039.11101) Full Text: Numdam EuDML
Sigalov, A. G. Die regulären Doppelintegrale der Variationsrechnung in nichtparametrischer Form. (Russian) Zbl 0038.26402 Dokl. Akad. Nauk SSSR, n. Ser. 73, 891-894 (1950). PDFBibTeX XMLCite \textit{A. G. Sigalov}, Dokl. Akad. Nauk SSSR, n. Ser. 73, 891--894 (1950; Zbl 0038.26402)
Davies, E. T. On the second variation of a simple integral with movable endpoints. (English) Zbl 0038.06003 J. Lond. Math. Soc. 24, 241-247 (1950). PDFBibTeX XMLCite \textit{E. T. Davies}, J. Lond. Math. Soc. 24, 241--247 (1950; Zbl 0038.06003) Full Text: DOI
Gillis, Paul P. Intégrales doubles du calcul des variations. (French) Zbl 0038.06002 Acad. Belgique, Bull. Cl. Sci., V. Ser. 36, 403-412 (1950). PDFBibTeX XMLCite \textit{P. P. Gillis}, Bull. Cl. Sci., V. Sér., Acad. R. Belg. 36, 403--412 (1950; Zbl 0038.06002)
Dedecker, Paul Sur un problème inverse du calcul des variations. (French) Zbl 0038.06001 Acad. Belgique, Bull. Cl. Sci., V. Ser. 36, 63-70 (1950). PDFBibTeX XMLCite \textit{P. Dedecker}, Bull. Cl. Sci., V. Sér., Acad. R. Belg. 36, 63--70 (1950; Zbl 0038.06001)
Sigalov, A. G. Zur Existenz des absoluten Minimums von Doppelintegralen der Variationsrechnung. (Russian) Zbl 0037.35001 Dokl. Akad. Nauk SSSR, n. Ser. 71, 617-620 (1950). PDFBibTeX XMLCite \textit{A. G. Sigalov}, Dokl. Akad. Nauk SSSR, n. Ser. 71, 617--620 (1950; Zbl 0037.35001)
Sigalov, A. G. Die Existenz des absoluten Minimums von Doppelintegralen der Variationsrechnung in Parameter form. (Russian) Zbl 0037.34902 Dokl. Akad. Nauk SSSR, n. Ser. 70, 769-772 (1950). PDFBibTeX XMLCite \textit{A. G. Sigalov}, Dokl. Akad. Nauk SSSR, n. Ser. 70, 769--772 (1950; Zbl 0037.34902)
Baiada, Emilio Il problema isoperimetrico del calcolo delle variazioni. (Italian) Zbl 0036.34701 Ann. Sc. Norm. Super. Pisa, II. Ser. 15, 97-112 (1950). PDFBibTeX XMLCite \textit{E. Baiada}, Ann. Sc. Norm. Super. Pisa, II. Ser. 15, 97--112 (1950; Zbl 0036.34701) Full Text: Numdam EuDML
Magenes, Enrico Intorno agli integrali di Fubini-Tonelli: II. Teoremi di esistenza dell’estremo. (Italian) Zbl 0036.34602 Ann. Sc. Norm. Super. Pisa, Sci. Fis. Mat., III. Ser. 3, 95-131 (1950). PDFBibTeX XMLCite \textit{E. Magenes}, Ann. Sc. Norm. Super. Pisa, Sci. Fis. Mat., III. Ser. 3, 95--131 (1950; Zbl 0036.34602) Full Text: Numdam EuDML
Magenes, Enrico Sui teoremi di Tonelli per la semicontinuita nei problemi di Mayer e di Lagrange. (Italian) Zbl 0036.34601 Ann. Sc. Norm. Super. Pisa, II. Ser. 15, 113-125 (1950). PDFBibTeX XMLCite \textit{E. Magenes}, Ann. Sc. Norm. Super. Pisa, II. Ser. 15, 113--125 (1950; Zbl 0036.34601) Full Text: Numdam EuDML
Stampacchia, Guido Gli integrali doppi del calcolo delle variazioni, in forma ordinaria. (Italian) Zbl 0036.07204 Atti Accad. Naz. Lincei, VIII. Ser., Rend., Cl. Sci. Fis. Mat. Nat. 8, 21-26 (1950). PDFBibTeX XMLCite \textit{G. Stampacchia}, Atti Accad. Naz. Lincei, VIII. Ser., Rend., Cl. Sci. Fis. Mat. Nat. 8, 21--26 (1950; Zbl 0036.07204)
Popoff, Kyrille Sur une propriété des extremales et le théorème de Jacobi. (French) Zbl 0036.07203 C. R. Acad. Sci., Paris 230, 1032-1033 (1950). PDFBibTeX XMLCite \textit{K. Popoff}, C. R. Acad. Sci., Paris 230, 1032--1033 (1950; Zbl 0036.07203)
Hestenes, Magnus R. An elementary introduction to the calculus of variations. (English) Zbl 0036.07104 Math. Mag. 23, 249-267 (1950). PDFBibTeX XMLCite \textit{M. R. Hestenes}, Math. Mag. 23, 249--267 (1950; Zbl 0036.07104) Full Text: DOI
Faedo, S. Una osservazione sul metodo di Ritz. (Italian) Zbl 0034.36401 Ann. Sc. Norm. Super. Pisa, Sci. Fis. Mat., III. Ser. 2, 85-97 (1950). PDFBibTeX XMLCite \textit{S. Faedo}, Ann. Sc. Norm. Super. Pisa, Sci. Fis. Mat., III. Ser. 2, 85--97 (1950; Zbl 0034.36401) Full Text: Numdam EuDML
Magenes, Enrico Intorno agli integrali di Fubini-Tonelli. I. Condizioni sufficienti per la semicontinuita. (Italian) Zbl 0034.36305 Ann. Sc. Norm. Super. Pisa, Sci. Fis. Mat., III. Ser. 2, 1-38 (1950). PDFBibTeX XMLCite \textit{E. Magenes}, Ann. Sc. Norm. Super. Pisa, Sci. Fis. Mat., III. Ser. 2, 1--38 (1950; Zbl 0034.36305) Full Text: Numdam EuDML