Halanay, A. Optimal control of periodic solutions. (English) Zbl 0276.49012 Rev. Roum. Math. Pures Appl. 19, 3-16 (1974). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 Documents MSC: 49K15 Optimality conditions for problems involving ordinary differential equations PDF BibTeX XML Cite \textit{A. Halanay}, Rev. Roum. Math. Pures Appl. 19, 3--16 (1974; Zbl 0276.49012)