Vasil’ev, V. V.; Kreĭn, S. G.; Piskarev, S. I. Semigroups of operators, cosine operator functions, and linear differential equations. (English. Russian original) Zbl 0748.47038 J. Sov. Math. 54, No. 4, 1042-1129 (1991); translation from Itogi Nauki Tekh., Ser. Mat. Anal. 28, 87-202 (1990). Reviewer: M.Wolff (Tübingen) MSC: 47D06 47D09 34G10 PDFBibTeX XMLCite \textit{V. V. Vasil'ev} et al., J. Sov. Math. 54, No. 4, 1042--1129 (1990; Zbl 0748.47038); translation from Itogi Nauki Tekh., Ser. Mat. Anal. 28, 87--202 (1990) Full Text: DOI
Gabov, S. A.; Sveshnikov, A. G. Problems in the dynamics of flotation liquids. (English. Russian original) Zbl 0850.76764 J. Sov. Math. 54, No. 4, 979-1041 (1991); translation from Itogi Nauki Tekh., Ser. Mat. Anal. 28, 3-86 (1990). MSC: 76T99 PDFBibTeX XMLCite \textit{S. A. Gabov} and \textit{A. G. Sveshnikov}, J. Sov. Math. 54, No. 4, 979--1041 (1990; Zbl 0850.76764); translation from Itogi Nauki Tekh., Ser. Mat. Anal. 28, 3--86 (1990) Full Text: DOI