Voir la notice de l'article provenant de la source Math-Net.Ru
@article{FAA_1973_7_4_a2, author = {I. M. Gel'fand and D. B. Fuchs}, title = {$PL$ foliations}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {29--37}, publisher = {mathdoc}, volume = {7}, number = {4}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1973_7_4_a2/} }
I. M. Gel'fand; D. B. Fuchs. $PL$ foliations. Funkcionalʹnyj analiz i ego priloženiâ, Tome 7 (1973) no. 4, pp. 29-37. http://geodesic.mathdoc.fr/item/FAA_1973_7_4_a2/