@article{RLIN_1994_9_5_2_a6,
     author = {Franchi, Bruno and Guti\'errez, Cristian E. and Wheeden, Richard L.},
     title = {Two-weight {Sobolev-Poincar\'e} inequalities and {Harnack} inequality for a class of degenerate elliptic operators},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni},
     pages = {167--175},
     publisher = {mathdoc},
     volume = {Ser. 9, 5},
     number = {2},
     year = {1994},
     zbl = {0811.46023},
     mrnumber = {982072},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLIN_1994_9_5_2_a6/}
}