Opsearch OPS - New York, USA : Springer, 1997- - v. : ill ; 23 cm. - Quarterly, 2002- - Bimonthly, 2001. Quarterly, 1964-2000. ISSN: 0030-3887 [Print] 0975-0320 [Online] Subjects--Topical Terms: Operations research--Periodicals Dewey Class. No.: 003.05 / OPS