@article{10_4153_CJM_1977_106_3,
     author = {Allegretto, W.},
     title = {A {Note} on a {Comparison} {Result} for {Elliptic} {Equations}},
     journal = {Canadian journal of mathematics},
     pages = {1081--1085},
     year = {1977},
     volume = {29},
     number = {5},
     doi = {10.4153/CJM-1977-106-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-106-3/}
}