@article{RSMUP_2002__107__139_0,
     author = {Lascialfari, Francesca and Pardo, David},
     title = {Compact embedding of a degenerate {Sobolev} space and existence of entire solutions to a semilinear equation for a {Grushin-type} operator},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {139--152},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {107},
     year = {2002},
     mrnumber = {1926206},
     zbl = {1072.35073},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_2002__107__139_0/}
}