@article{AFM_2017_42_1_a20,
     author = {Valentino Magnani},
     title = {Some remarks on densities in the {Heisenberg} group},
     journal = {Annales Fennici Mathematici},
     pages = {357--365},
     publisher = {mathdoc},
     volume = {42},
     number = {1},
     year = {2017},
     doi = {10.5186/aasfm.2017.4217},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.2017.4217/}
}