Voir la notice de l'article provenant de la source The Polish Digital Mathematics Library
@article{AGMS_2015_3_1_a12, author = {Haj{\l}asz, Piotr and Zimmerman, Scott}, title = {Geodesics in the {Heisenberg} {Group}}, journal = {Analysis and Geometry in Metric Spaces}, publisher = {mathdoc}, volume = {3}, number = {1}, year = {2015}, zbl = {1328.53039}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AGMS_2015_3_1_a12/} }
Hajłasz, Piotr; Zimmerman, Scott. Geodesics in the Heisenberg Group. Analysis and Geometry in Metric Spaces, Tome 3 (2015) no. 1. http://geodesic.mathdoc.fr/item/AGMS_2015_3_1_a12/