@article{1250523557, author = {Miyanishi, Masayoshi}, title = {The theorem of the cube for principal homogeneous spaces}, journal = {J. Math. Kyoto Univ.}, volume = {12}, number = {2}, year = {1972}, pages = { 1-15}, language = {en}, url = {http://dml.mathdoc.fr/item/1250523557} }
Miyanishi, Masayoshi. The theorem of the cube for principal homogeneous spaces. J. Math. Kyoto Univ., Tome 12 (1972) no. 2, pp. 1-15. http://gdmltest.u-ga.fr/item/1250523557/