Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MM2_1997__92_3_156262, author = {G\'abor Elek}, title = {Betti numbers and {Euler's} formula for combinatorial foliations.}, journal = {Manuscripta mathematica}, pages = {239--248}, publisher = {mathdoc}, volume = {92}, number = {3}, year = {1997}, zbl = {0876.57042}, url = {http://geodesic.mathdoc.fr/item/MM2_1997__92_3_156262/} }
Gábor Elek. Betti numbers and Euler's formula for combinatorial foliations.. Manuscripta mathematica, Tome 92 (1997) no. 3, pp. 239-248. http://geodesic.mathdoc.fr/item/MM2_1997__92_3_156262/