@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},
     publisher = {mathdoc},
     volume = {2015},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2015__2015__a42/}
}