Heikkilä, S. On the solvability of distributional and impulsive systems of Cauchy problems. (English) Zbl 1258.34024 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 75, No. 12, 4604-4631 (2012). Reviewer: Antonín Slavík (Praha) MSC: 34A12 34A36 34A37 47H10 47J25 26A24 26A39 PDFBibTeX XMLCite \textit{S. Heikkilä}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 75, No. 12, 4604--4631 (2012; Zbl 1258.34024) Full Text: DOI
Heikkilä, S. On nonlinear distributional and impulsive Cauchy problems. (English) Zbl 1238.34017 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 75, No. 2, 852-870 (2012). Reviewer: Teodora-Liliana Rădulescu (Craiova) MSC: 34A12 26A39 34A37 47N20 34A45 PDFBibTeX XMLCite \textit{S. Heikkilä}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 75, No. 2, 852--870 (2012; Zbl 1238.34017) Full Text: DOI
Heikkila, Seppo Continuous solutions of distributional Cauchy problems. (English) Zbl 1236.46036 Electron. J. Differ. Equ. 2011, Paper No. 108, 11 p. (2011). MSC: 46F10 34A12 34A36 PDFBibTeX XMLCite \textit{S. Heikkila}, Electron. J. Differ. Equ. 2011, Paper No. 108, 11 p. (2011; Zbl 1236.46036) Full Text: EMIS
Heikkilä, S.; Kumpulainen, M. Second order initial value problems with non-absolute integrals in ordered Banach spaces. (English) Zbl 1221.34160 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 74, No. 3, 901-908 (2011). MSC: 34G20 26A39 28B15 34A09 34A12 34A36 47B38 47H07 47H10 PDFBibTeX XMLCite \textit{S. Heikkilä} and \textit{M. Kumpulainen}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 74, No. 3, 901--908 (2011; Zbl 1221.34160) Full Text: DOI
Heikkilä, S.; Kumpulainen, M. On improper integrals and differential equations in ordered Banach spaces. (English) Zbl 1105.34037 J. Math. Anal. Appl. 319, No. 2, 579-603 (2006). Reviewer: Marianne Reichert (Frankfurt / Main) MSC: 34G20 34A99 34B99 34A12 PDFBibTeX XMLCite \textit{S. Heikkilä} and \textit{M. Kumpulainen}, J. Math. Anal. Appl. 319, No. 2, 579--603 (2006; Zbl 1105.34037) Full Text: DOI
Agarwal, R. P.; Heikkilä, S. On the solvability of first-order discontinuous scalar initial and boundary value problems. (English) Zbl 1041.34004 ANZIAM J. 44, No. 4, 513-538 (2003). Reviewer: Ştefan Mirică (Bucureşti) MSC: 34A36 34A12 34B15 34C11 PDFBibTeX XMLCite \textit{R. P. Agarwal} and \textit{S. Heikkilä}, ANZIAM J. 44, No. 4, 513--538 (2003; Zbl 1041.34004) Full Text: DOI
Cabada, A.; Heikkilä, S. Extremality and comparison results for discontinuous third order functional initial-boundary value problems. (English) Zbl 0976.34009 J. Math. Anal. Appl. 255, No. 1, 195-212 (2001). Reviewer: Eduardo Liz (Vigo) MSC: 34A36 34B15 34A12 PDFBibTeX XMLCite \textit{A. Cabada} and \textit{S. Heikkilä}, J. Math. Anal. Appl. 255, No. 1, 195--212 (2001; Zbl 0976.34009) Full Text: DOI
Seikkala, S.; Heikkilä, S. Uniqueness, comparison and existence results for discontinuous implicit differential equations. (English) Zbl 0893.34001 Nonlinear Anal., Theory Methods Appl. 30, No. 3, 1771-1780 (1997). Reviewer: Zusana Došlá MSC: 34A09 34A12 PDFBibTeX XMLCite \textit{S. Seikkala} and \textit{S. Heikkilä}, Nonlinear Anal., Theory Methods Appl. 30, No. 3, 1771--1780 (1997; Zbl 0893.34001) Full Text: DOI
Carl, S.; Heikkilä, S.; Lakshmikantham, V. Nonlinear elliptic differential inclusions governed by state-dependent subdifferentials. (English) Zbl 0931.35203 Nonlinear Anal., Theory Methods Appl. 25, No. 7, 729-745 (1995). Reviewer: A.Marano MSC: 35R70 35J65 47F05 PDFBibTeX XMLCite \textit{S. Carl} et al., Nonlinear Anal., Theory Methods Appl. 25, No. 7, 729--745 (1995; Zbl 0931.35203) Full Text: DOI