@article{RSMUP_2009__122__99_0,
     author = {Venturi, Irene},
     title = {Rigid {Two-Step} {Nilpotent} {Lie} {Groups} relative to {Multicontact} {Structures}},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {99--127},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {122},
     year = {2009},
     mrnumber = {2582833},
     zbl = {1219.17005},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_2009__122__99_0/}
}