Memoirs of the American Mathematical Society, ISSN 0065-9266 ; Volume 83, Number 419
Print version: Irving, Ronald S., 1952- Filtered category OS and applications. Providence, Rhode Island : American Mathematical Society, c1990 v, 117 pages Memoirs of the American Mathematical Society ; Volume 83, Number 419. ISBN 9780821824825
"January 1990, volume 83, number 419 (first of 6 numbers)."