Chujko, S. M.; Chujko, E. V.; Kulish, P. V. Periodic boundary-value problem for Hill’s equation in the case of parametric resonance. (Russian. English summary) Zbl 1318.34042 Din. Sist., Simferopol’ 3(31), No. 1-2, 151-158 (2013). MSC: 34B30 34E10 34A45 PDFBibTeX XMLCite \textit{S. M. Chujko} et al., Din. Sist., Simferopol' 3(31), No. 1--2, 151--158 (2013; Zbl 1318.34042)
Chuiko, S. M.; Kulish, P. V. Linear Noetherian boundary value problems in the case of a parametric resonance. (Russian. English summary) Zbl 1324.34034 Tr. Inst. Prikl. Mat. Mekh. 24, 243-252 (2012). Reviewer: A. L. Zuyev MSC: 34B10 34B15 34A45 34E10 PDFBibTeX XMLCite \textit{S. M. Chuiko} and \textit{P. V. Kulish}, Tr. Inst. Prikl. Mat. Mekh. 24, 243--252 (2012; Zbl 1324.34034)