@article{10_4153_CJM_1986_022_4,
     author = {Borwein, J. M. and Strojwas, H. M.},
     title = {Proximal {Analysis} and {Boundaries} of {Closed} {Sets} in {Banach} {Space,} {Part} {I:} {Theory}},
     journal = {Canadian journal of mathematics},
     pages = {431--452},
     year = {1986},
     volume = {38},
     number = {2},
     doi = {10.4153/CJM-1986-022-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1986-022-4/}
}