00670nas a2200205 4500 1/50710 021003c19769999riuqr1p a0eng d 0364-765X 24003 Αλφαβητική σειρά Mathematics of operations research [Providence, R.I.] : [Institute of Management Sciences], 1976- v. ; 26 cm. Quarterly Vol.2, no.1(Febr. 1977)-v.24, no.4(Nov. 1999) English Operations research Periodicals. Mathematics Periodicals. Institute of Management Sciences. Operations Research Society of America.