@article{IM_1981__63_142793,
     author = {K. Shiohama and R.E. Greene},
     title = {Convex {Functions} on {Complete} {Noncompact} {Manifolds:} {Topological} {Structure.}},
     journal = {Inventiones mathematicae},
     pages = {129--158},
     publisher = {mathdoc},
     volume = {63},
     year = {1981},
     zbl = {0468.53033},
     url = {http://geodesic.mathdoc.fr/item/IM_1981__63_142793/}
}