@article{PMATES_2004__48_2_41509,
     author = {Valentino Magnani},
     title = {Note on coarea formulae in the {Heisenberg} group.},
     journal = {Publicacions Matem\`atiques},
     pages = {409-422},
     volume = {48},
     number = {2},
     year = {2004},
     zbl = {an:1062.22020},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/PMATES_2004__48_2_41509/}
}