@article{00887283, title = {Regularization of birational group operations in sense of Weil.}, journal = {Journal of Lie Theory}, volume = {5}, year = {1995}, pages = {207-224}, zbl = {0873.14012}, language = {en}, url = {http://dml.mathdoc.fr/item/00887283} }
Zaitsev, Dmitri. Regularization of birational group operations in sense of Weil.. Journal of Lie Theory, Tome 5 (1995) pp. 207-224. http://gdmltest.u-ga.fr/item/00887283/