Bergamasco, Adalberto P.; de Medeira, Cleber; Kirilov, Alexandre; Zani, Sérgio L. On the global solvability of involutive systems. (English) Zbl 1359.37107 J. Math. Anal. Appl. 444, No. 1, 527-549 (2016). MSC: 37F75 32M25 35S05 35F05 PDF BibTeX XML Cite \textit{A. P. Bergamasco} et al., J. Math. Anal. Appl. 444, No. 1, 527--549 (2016; Zbl 1359.37107) Full Text: DOI
Bergamasco, A. P.; Dattori da Silva, P. L.; Meziani, A. Solvability of a first order differential operator on the two-torus. (English) Zbl 1302.35106 J. Math. Anal. Appl. 416, No. 1, 166-180 (2014). MSC: 35F05 35A01 35B10 PDF BibTeX XML Cite \textit{A. P. Bergamasco} et al., J. Math. Anal. Appl. 416, No. 1, 166--180 (2014; Zbl 1302.35106) Full Text: DOI
Bergamasco, Adalberto P.; Petronilho, Gerson Global solvability of a class of involutive systems. (English) Zbl 0942.35011 J. Math. Anal. Appl. 233, No. 1, 314-327 (1999). Reviewer: Th.M.Rassias (Athens) MSC: 35A30 PDF BibTeX XML Cite \textit{A. P. Bergamasco} and \textit{G. Petronilho}, J. Math. Anal. Appl. 233, No. 1, 314--327 (1999; Zbl 0942.35011) Full Text: DOI
Bergamasco, Adalberto P. Uniqueness in a characteristic Cauchy problem with variable multiplicity. (English) Zbl 0791.35021 J. Math. Anal. Appl. 182, No. 1, 23-33 (1994). MSC: 35G10 35A05 PDF BibTeX XML Cite \textit{A. P. Bergamasco}, J. Math. Anal. Appl. 182, No. 1, 23--33 (1994; Zbl 0791.35021) Full Text: DOI
Bergamasco, Adalberto P.; Petronilho, Gerson Re-establishment of uniqueness. I. (English) Zbl 0798.47035 J. Math. Anal. Appl. 178, No. 2, 309-321 (1993). MSC: 47F05 35A05 PDF BibTeX XML Cite \textit{A. P. Bergamasco} and \textit{G. Petronilho}, J. Math. Anal. Appl. 178, No. 2, 309--321 (1993; Zbl 0798.47035) Full Text: DOI
Bergamasco, Adalberto P.; Petronilho, Gerson On the hypoellipticity of degenerate elliptic boundary value problems. (English) Zbl 0767.35114 J. Math. Anal. Appl. 171, No. 2, 407-417 (1992). Reviewer: V.S.Rabinovich (Rostov-na-Donu) MSC: 35S05 35J70 65H10 PDF BibTeX XML Cite \textit{A. P. Bergamasco} and \textit{G. Petronilho}, J. Math. Anal. Appl. 171, No. 2, 407--417 (1992; Zbl 0767.35114) Full Text: DOI