@article{AIF_2016__66_4_1653_0,
     author = {Balogh, Zolt\'an M. and Lang, Urs and Pansu, Pierre},
     title = {Lipschitz extensions of maps between {Heisenberg} groups},
     journal = {Annales de l'Institut Fourier},
     pages = {1653--1665},
     publisher = {Association des Annales de l{\textquoteright}institut Fourier},
     volume = {66},
     number = {4},
     year = {2016},
     doi = {10.5802/aif.3046},
     language = {en},
     url = {https://aif.centre-mersenne.org/articles/10.5802/aif.3046/}
}