@article{EJDE_2015__2015__a42,
     author = {Kirane,  Mokhtar and Ragoub,  Lakhdar},
     title = {Nonexistence results for a pseudo-hyperbolic equation in the {Heisenberg} group},
     journal = {Electronic journal of differential equations},
     year = {2015},
     volume = {2015},
     zbl = {1336.35345},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2015__2015__a42/}
}