The Mathematical theory of optimal processes - Pontr/iagin, L. S. (Lev Semenovich), 1908- (Classics of Soviet mathematics Selections. lPolyglot. 1986 (Pontr/iagin, L. S. (Lev Semenovich), 1908-) nClassics of Soviet mathematics nSelections. lPolyglot. 1986 (Pontr/iagin, L. S. (Lev Semenovich), 1908-), 1986)