Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1978__53_139730, author = {George Piranian and Allen Weitsman}, title = {Level sets of infinite length.}, journal = {Commentarii mathematici Helvetici}, pages = {161--164}, publisher = {mathdoc}, volume = {53}, year = {1978}, zbl = {0374.30025}, url = {http://geodesic.mathdoc.fr/item/CMH_1978__53_139730/} }
George Piranian; Allen Weitsman. Level sets of infinite length.. Commentarii mathematici Helvetici, Tome 53 (1978), pp. 161-164. http://geodesic.mathdoc.fr/item/CMH_1978__53_139730/