Garsevanishvili, V. R.; Sheftel, M. B. On the choice of invariant variables for two-particle processes. (English) Zbl 0758.51016 Rep. Math. Phys. 29, No. 1, 85-94 (1991). Reviewer: H.Germer (Berlin) MSC: 51M09 81U05 PDFBibTeX XMLCite \textit{V. R. Garsevanishvili} and \textit{M. B. Sheftel}, Rep. Math. Phys. 29, No. 1, 85--94 (1991; Zbl 0758.51016) Full Text: DOI
Berggren, J. L. Ptolemy’s maps of Earth and the heavens: a new interpretation. (English) Zbl 0778.01001 Arch. Hist. Exact Sci. 43, No. 2, 133-144 (1991). Reviewer: M.Yano (Kamigamo) MSC: 01A20 PDFBibTeX XMLCite \textit{J. L. Berggren}, Arch. Hist. Exact Sci. 43, No. 2, 133--144 (1991; Zbl 0778.01001) Full Text: DOI
Guan, Keying; Chen, Zuming Doubly periodic solutions of the Riccati equation in complex domain. (English) Zbl 0774.34006 Chin. Sci. Bull. 36, No. 23, 1943-1947 (1991). Reviewer: M.Dutta (Calcutta) MSC: 34M99 34C25 PDFBibTeX XMLCite \textit{K. Guan} and \textit{Z. Chen}, Chin. Sci. Bull. 36, No. 23, 1943--1947 (1991; Zbl 0774.34006)