TY  - BOOK
AU  - Encyclopedia of Mathematics and its applications
AU  - Sachkov, Vladimir N.
AU  - Kolchin, V.
TI  - Combinatorial methods in discrete mathematics
T2  - Encyclopedia of Mathematics and its applications
U1  - 510.3 
PY  - 1996///
CY  - Cambridge
PB  - Cambridge University Press
N1  - "Translated from the Russian by V. Kolchin"
ER  -