TY  - BOOK
AU  - Johnson, E. L
TI  - Integer programming : facets, subadditivity, and duality for group and semi-group problems
SN  - 9780898711622
SN  - 79093152
U1  - 512.72 JOH 
PY  - 1980///
CY  - Philadelphia, PA
PB  - Society for Industrial and Applied Mathematics
KW  - Group theory
KW  - Integer programming
KW  - Semigroups
N1  - Lecture notes presented at the Regional Research Conference on Integer Programming, State University of New York at Buffalo, June 5-9, 1978. Includes bibliographical references
ER  -