@article{GDZPPN002106116,
title = {The angle criterion.},
journal = {Inventiones mathematicae},
volume = {96},
year = {1989},
pages = {437-446},
zbl = {0662.49018},
url = {http://dml.mathdoc.fr/item/GDZPPN002106116}
}
Lawlor, Gary. The angle criterion.. Inventiones mathematicae, Tome 96 (1989) pp. 437-446. http://gdmltest.u-ga.fr/item/GDZPPN002106116/