Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{KYB_1980__16_4_a1, author = {Chawla, J. S.}, title = {An invariant for continuous mappings}, journal = {Kybernetika}, pages = {--317}, publisher = {mathdoc}, volume = {16}, number = {4}, year = {1980}, mrnumber = {591960}, zbl = {0473.54032}, language = {en}, url = {http://geodesic.mathdoc.fr/item/KYB_1980__16_4_a1/} }
Chawla, J. S. An invariant for continuous mappings. Kybernetika, Tome 16 (1980) no. 4, p. 317. http://geodesic.mathdoc.fr/item/KYB_1980__16_4_a1/