@article{GDZPPN002063018, title = {Pseudoconcave homogeneous surfaces.}, journal = {Commentarii mathematici Helvetici}, volume = {53}, year = {1978}, pages = {429-438}, zbl = {0387.32014}, url = {http://dml.mathdoc.fr/item/GDZPPN002063018} }
Gilligan, B.; Huckleberry, A. Pseudoconcave homogeneous surfaces.. Commentarii mathematici Helvetici, Tome 53 (1978) pp. 429-438. http://gdmltest.u-ga.fr/item/GDZPPN002063018/