Tak W. Yan. A rational function arithmetic and simplification system in common Lisp. ACM Comm. Computer Algebra, 25(4):4-6, 1991. [doi]
@article{Yan91-0,
title = {A rational function arithmetic and simplification system in common Lisp},
author = {Tak W. Yan},
year = {1991},
doi = {10.1145/122508.122510},
url = {http://doi.acm.org/10.1145/122508.122510},
researchr = {https://researchr.org/publication/Yan91-0},
cites = {0},
citedby = {0},
journal = {ACM Comm. Computer Algebra},
volume = {25},
number = {4},
pages = {4-6},
}