@article{10_4153_CJM_1976_017_x,
     author = {Bellenot, Steven F.},
     title = {On {Nonstandard} {Hulls} of {Convex} {Spaces}},
     journal = {Canadian journal of mathematics},
     pages = {141--147},
     year = {1976},
     volume = {28},
     number = {1},
     doi = {10.4153/CJM-1976-017-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1976-017-x/}
}