@article{EJDE_2000__2000__a179,
     author = {Bucur,  Dorin and Varchon,  Nicolas},
     title = {Global minimizing domains for the first eigenvalue of an elliptic operator with non-constant coefficients},
     journal = {Electronic journal of differential equations},
     year = {2000},
     volume = {2000},
     zbl = {0958.49024},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2000__2000__a179/}
}