@article{00847588, title = {Singular Klein manifolds.}, journal = {Portugaliae Mathematica. Nova S\'erie}, volume = {52}, year = {1995}, pages = {499-509}, zbl = {0842.53009}, language = {en}, url = {http://dml.mathdoc.fr/item/00847588} }
Abdel-All, N.H. Singular Klein manifolds.. Portugaliae Mathematica. Nova Série, Tome 52 (1995) pp. 499-509. http://gdmltest.u-ga.fr/item/00847588/