Pontriagin, L. S. 1908- The mathematical theory of optimal processes / L. S. pontryagin ; translated from the Russian by K. N. Trirgoff. - New York : Gordon and Breach Science Publishers, 1986. - 360 p. ; 24 cm. - L. S. Pontryagin selected works ; v.4 . ISBN: 2881240771 Subjects--Topical Terms: Mathematical optimization.