@article{MABA_1991_5_3_a9,
     author = {Georgi I. Chobanov},
     title = {Non-Zero {Solutions} for a {Homogeneous} {Semilinear} {Elliptic} {Equation}},
     journal = {Mathematica balkanica},
     pages = {261},
     publisher = {mathdoc},
     volume = {5},
     number = {3},
     year = {1991},
     url = {http://geodesic.mathdoc.fr/item/MABA_1991_5_3_a9/}
}