Good articles: R. Evan Wallace and C. Schroeder Analysis of Billiard Ball Collisions in Two Dimensions Am. J. Phys. 56, 815, 1988. George Y. Onoda Am. J. Phys. 57, 476, 1989.
The Physics of Pocket Billiards
Wayland C. Marlowe
available now from the author
Wayland C. Marlowe
14645 Black Bear Road
Palm Beach Gardens, FL 33418-8606
$32.45
or call American Institute of Physics 1-800-809-2247
The Science of Pocket Billiards
Jack H. Koehler
Sportology Publications
25832 Evergreen Rd.
Laguna Hills, CA 92653
$32.04 with shipping and tax
This one belongs on your shelf along with
Byrne's Advanced Techniques and
Fel's Mastering Pool.