@article{JOLT_2011_21_4_a2,
     author = {A. Ottazzi and B. Warhurst},
     title = {Contact and {1-Quasiconformal} {Maps} on {Carnot} {Groups}},
     journal = {Journal of Lie Theory},
     pages = {787--811},
     year = {2011},
     volume = {21},
     number = {4},
     doi = {10.5802/jolt.649},
     zbl = {1254.22006},
     url = {https://jolt.centre-mersenne.org/articles/10.5802/jolt.649/}
}