TY  - GEN
T1  - European journal of operational research [ejournal].
LA  - English
PP  - Amsterdam
PB  - Elsevier
YR  - 1977
UL  - https://tuklas.up.edu.ph/Record/UP-99796217611795880
KW  - Operations research -- Periodicals.
KW  - Operations research.
ER  -