@article{10_21136_CMJ_1979_101616,
     author = {Zaj{\'\i}\v{c}ek, Lud\v{e}k},
     title = {On the differentiation of convex functions in finite and infinite dimensional spaces},
     journal = {Czechoslovak Mathematical Journal},
     pages = {340--348},
     publisher = {mathdoc},
     volume = {29},
     number = {3},
     year = {1979},
     doi = {10.21136/CMJ.1979.101616},
     mrnumber = {536060},
     zbl = {0429.46007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1979.101616/}
}