Sorensen D C Proceeding on Nondifferential and variational techniques in optimization Sorensen D C; Wets R J B - Amsterdam North-Holland Publishing 1982 - ix, 159p. cm. - Mathematical programming study; 17 . Standard No.: 32058 Source: Textual Subjects--Topical Terms: Systems engineeringMathematical optimization Dewey Class. No.: B311p1,N80, M2