%0 Journal Article %A Lascialfari, Francesca %A Pardo, David %T Compact embedding of a degenerate Sobolev space and existence of entire solutions to a semilinear equation for a Grushin-type operator %J Rendiconti del Seminario Matematico della Università di Padova %D 2002 %P 139-152 %V 107 %I Seminario Matematico of the University of Padua %U http://www.numdam.org/item/RSMUP_2002__107__139_0/ %G en %F RSMUP_2002__107__139_0