@article{CLTM_2006_2006_1_a6,
     author = {M\"uller, Detlef and Peloso, Marco M. and Ricci, Fulvio},
     title = {Autovalores del laplaciano de {Hodge} en el grupo de {Heisenberg.}},
     journal = {Collectanea mathematica},
     pages = {327-342},
     publisher = {mathdoc},
     volume = {57},
     number = {Extra},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CLTM_2006_2006_1_a6/}
}