Blagoveshchensky, A. S. On waves generated by sources localized at infinity. (English. Russian original) Zbl 1435.35209 J. Math. Sci., New York 243, No. 5, 671-681 (2019); translation from Zap. Nauchn. Semin. POMI 471, 59-75 (2018). MSC: 35L05 PDFBibTeX XMLCite \textit{A. S. Blagoveshchensky}, J. Math. Sci., New York 243, No. 5, 671--681 (2019; Zbl 1435.35209); translation from Zap. Nauchn. Semin. POMI 471, 59--75 (2018) Full Text: DOI
Hinterleitner, I.; Mikeš, J. On fundamental equations of geodesic mappings and their generalizations. (English. Russian original) Zbl 1283.53015 J. Math. Sci., New York 174, No. 5, 537-554 (2011); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 124, No. 1 (2010). MSC: 53A55 PDFBibTeX XMLCite \textit{I. Hinterleitner} and \textit{J. Mikeš}, J. Math. Sci., New York 174, No. 5, 537--554 (2011; Zbl 1283.53015); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 124, No. 1 (2010) Full Text: DOI