Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MT_1992_22_a5, author = {V. M. Gordienko}, title = {On quadrangles on surfaces of constant curvature}, journal = {Matemati\v{c}eskie trudy}, pages = {124--133}, publisher = {mathdoc}, volume = {22}, year = {1992}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MT_1992_22_a5/} }
V. M. Gordienko. On quadrangles on surfaces of constant curvature. Matematičeskie trudy, Tome 22 (1992), pp. 124-133. http://geodesic.mathdoc.fr/item/MT_1992_22_a5/