@article{COMA_2016__56_1_292402,
     author = {Jerzy Grzybowski and Diethard Pallaschke and Ryszard Urba\'nski},
     title = {Support functions and subdifferentials},
     journal = {Commentationes Mathematicae},
     publisher = {mathdoc},
     volume = {56},
     number = {1},
     year = {2016},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/COMA_2016__56_1_292402/}
}