@article{ASNSP_2001_4_30_2_269_0,
     author = {Birindelli, Isabeau and Prajapat, Jyotshana},
     title = {One dimensional symmetry in the {Heisenberg} group},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {269--284},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 30},
     number = {2},
     year = {2001},
     mrnumber = {1895712},
     zbl = {1014.35019},
     language = {en},
     url = {http://archive.numdam.org/item/ASNSP_2001_4_30_2_269_0/}
}