@article{EJDE_2012__2012__a24,
     author = {Boutaous, Fatiha and Labbas, Rabah and Sadallah, Boubaker-Khaled},
     title = {Fractional-power approach for solving complete elliptic abstract differential equations with variable-operator coefficients},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2012},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2012__2012__a24/}
}