Prusińska, Agnieszka; Tret’yakov, Alexey \(p\)-order necessary and sufficient conditions for optimality in singular calculus of variations. (English) Zbl 1237.49027 Discuss. Math., Differ. Incl. Control Optim. 30, No. 2, 269-279 (2010). MSC: 49K15 46N10 49N60 90C30 PDFBibTeX XMLCite \textit{A. Prusińska} and \textit{A. Tret'yakov}, Discuss. Math., Differ. Incl. Control Optim. 30, No. 2, 269--279 (2010; Zbl 1237.49027) Full Text: DOI
Prusínska, Agnieszka; Tret’yakov, Alexey On existence of solutions to degenerate nonlinear optimization problems. (English) Zbl 1151.90048 Discuss. Math., Differ. Incl. Control Optim. 27, No. 1, 151-164 (2007). MSC: 90C30 49M05 47H10 47A50 47J05 PDFBibTeX XMLCite \textit{A. Prusínska} and \textit{A. Tret'yakov}, Discuss. Math., Differ. Incl. Control Optim. 27, No. 1, 151--164 (2007; Zbl 1151.90048) Full Text: DOI Link