1. BLAIR , E. L.
CHARNSETHIKUL , P. , and
VASQUES , A. , 1985 , Optimal routing of driverlesa vehicles in a flexible material handling system . Texas Tech University and Rensselaer Polytechnic Institute , U.S.A. , November .
2. COHEN , C. , and
STEIN , J. , 1978 , Multi purpose optimization system user's guide . Manual No, 320, Vogelback Computing Center , Northwestern University , Evanston , Illinois , U.S.A.
3. EOBELU , P. J. , and
TANCHOCO , J. M. A. , 1982 , Operating considerations for the design of automatic guided vehicle based material handling systems . Technical report No. 8201, Department of Industrial Engineering and Operations Research , Virginia Polytechnic Institute and State University , Blacksburg , Virginia , U.S.A.