@article{10_1155_S0161171202110428,
     author = {Afrouzi, G. A. and Ghasemzadeh, H.},
     title = {Super and subsolutions for elliptic equations on all of .},
     journal = {International Journal of Mathematics and Mathematical Sciences},
     pages = {41},
     publisher = {mathdoc},
     volume = {32},
     number = {1},
     year = {2002},
     doi = {10.1155/S0161171202110428},
     zbl = {1098.35062},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.1155/S0161171202110428/}
}