@article{01315574, title = {Classical }, journal = {Geometry \& Topology}, volume = {3}, year = {1999}, pages = {21-66}, doi = {10.2140/gt.1999.3.21}, zbl = {0918.22014}, language = {en}, url = {http://dml.mathdoc.fr/item/01315574} }
Roberts, Justin. Classical . Geometry & Topology, Tome 3 (1999) pp. 21-66. doi : 10.2140/gt.1999.3.21. http://gdmltest.u-ga.fr/item/01315574/