@article{EJDE_2010__2010__a21,
     author = {Bouchekif,  Mohammed and Matallah,  Atika},
     title = {Singular elliptic equations involving a concave term and critical {Caffarelli-Kohn-Nirenberg} exponent with sign-changing weight functions},
     journal = {Electronic journal of differential equations},
     year = {2010},
     volume = {2010},
     zbl = {1190.35109},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2010__2010__a21/}
}