00361nam a2200121Ia 4500082002200000100004400022245006900066260003400135300001000169490005000179500000500229700000500234  a658.4034bF199.OR  aFandel, Herausgegeben Von G. and Others  aOperations research proceedings; papers of annual meeting 1980b  aBerlinbSpringer-Verlagc1981  a687p.  aDeutsche Gesellschaft for Operations Research  a  a