00409nam a2200121Ia 4500082002000000100007700020245006100097260002700158300001000185500008200195500000500277700000500282  a519.76bN277.EN  aNational Center for Scientific Research, Institute of Mathematics, Hanoi  aEssays on nonlinear analysis and optimization problemsb  aHanoibThe Auth.c1987  a172p.  a"Book dedicated to Prof. Hoanf Tuy on the occasion of his Sixtieth birthday".  a  a