Memoirs of the American Mathematical Society, ISSN 0065-9266 ; Number 413
Print version: Brenti, Francesco, 1960- Unimodal, log-concave and Polya frequency sequences in combinatorics. Providence, Rhode Island : American Mathematical Society, c1989 viii, 106 pages Memoirs of the American Mathematical Society ; Number 413. ISBN 9780821824764
"September 1989, Volume 81, Number 413 (fourth of 6 numbers)."