Shokooh, Saeid Variational analysis to fourth-order impulsive differential equations. (English) Zbl 1431.35005 Bol. Soc. Parana. Mat. (3) 38, No. 1, 151-163 (2020). MSC: 35B38 34B15 58E05 PDFBibTeX XMLCite \textit{S. Shokooh}, Bol. Soc. Parana. Mat. (3) 38, No. 1, 151--163 (2020; Zbl 1431.35005) Full Text: Link
Shokooh, Saeid; Afrouzi, Ghasem A. Infinitely many solutions for a class of fourth-order impulsive differential equations. (English) Zbl 1411.34043 Adv. Pure Appl. Math. 10, No. 1, 7-16 (2019). Reviewer: Sotiris K. Ntouyas (Ioannina) MSC: 34B37 34B15 58E05 34A37 PDFBibTeX XMLCite \textit{S. Shokooh} and \textit{G. A. Afrouzi}, Adv. Pure Appl. Math. 10, No. 1, 7--16 (2019; Zbl 1411.34043) Full Text: DOI