TY  - BOOK
AU  - Balinski M L Ed.
AU  -  Wolfe Philip Ed.
TI  - Nondifferentiable optimization
T2  - Mathematical programming study; 3
U1  - B2893, L55 
PY  - 1975///
CY  - Amsterdam
PB  - North-holland publisher        
N1  - Bibliography 174-178p
ER  -