@article{GDZPPN002197618,
title = {Pythagorean triangels and a quartic surface.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {316},
year = {1980},
pages = {120-125},
zbl = {0425.10018},
url = {http://dml.mathdoc.fr/item/GDZPPN002197618}
}
Bremner, Andrew. Pythagorean triangels and a quartic surface.. Journal für die reine und angewandte Mathematik, Tome 316 (1980) pp. 120-125. http://gdmltest.u-ga.fr/item/GDZPPN002197618/