Cameron, Peter J. 1947- Combinatorics : topics, techniques, algorithms / Peter J. Cameron - 1a ed. - Cambridge ; New York : Cambridge University Press, 1994 - x, 355 p. : il. ; 25 cm. Bibliografía : p. 343-345 e índice ISBN: 0521457610 Subjects--Topical Terms: Análisis combinatorio LC Class. No.: QA164 / C36 1994