Schaum's outline of theory and problems of combinatorics
Balakrishnan V. K.Kniha
Citace v seznamu literatury:
BALAKRISHNAN, V. K. Schaum's outline of theory and problems of combinatorics. Schaum's outline series. New York: McGraw-Hill, c1995. ISBN 007003575X. Dostupné také z: http://www.loc.gov/catdir/description/mh031/94026728.html.