## BibTex format

@article{Ruzhansky:2018:10.1016/j.jde.2018.06.033,

author = {Ruzhansky, M and Tokmagambetov, N},

doi = {10.1016/j.jde.2018.06.033},

journal = {Journal of Differential Equations},

title = {Nonlinear damped wave equations for the sub-Laplacian on the Heisenberg group and for Rockland operators on graded Lie groups},

url = {http://dx.doi.org/10.1016/j.jde.2018.06.033},

year = {2018}

}