@article{EJDE_2003__2003__a193,
     author = {Carmona, Jos\'e and Cingolani, Silvia and Vannella, Giuseppina},
     title = {Estimates for critical groups of solutions to quasilinear elliptic systems},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2003},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2003__2003__a193/}
}