@article{10_4153_CMB_1998_065_9,
     author = {Borwein, J. M. and Girgensohn, R. and Wang, Xianfu},
     title = {On the {Construction} of {H\"older} and {Proximal} {Subderivatives}},
     journal = {Canadian mathematical bulletin},
     pages = {497--507},
     year = {1998},
     volume = {41},
     number = {4},
     doi = {10.4153/CMB-1998-065-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1998-065-9/}
}