Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{PMFA_1986__31_2_a1, author = {Gindikin, S. G.}, title = {Komplexn{\'\i} vesm{\'\i}r {Rogera} {Penrose}}, journal = {Pokroky matematiky, fyziky a astronomie}, pages = {83--95}, publisher = {mathdoc}, volume = {31}, number = {2}, year = {1986}, mrnumber = {0857420}, zbl = {0595.14003}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/PMFA_1986__31_2_a1/} }
Gindikin, S. G. Komplexní vesmír Rogera Penrose. Pokroky matematiky, fyziky a astronomie, Tome 31 (1986) no. 2, pp. 83-95. http://geodesic.mathdoc.fr/item/PMFA_1986__31_2_a1/