@article{AM2_1991__42_3_137418,
     author = {Alberto Seeger},
     title = {Compl\'ement de {Schur} et sous-diff\'erentiel du second ordre d'une fonction convexe.},
     journal = {Aequationes mathematicae},
     pages = {47--71},
     publisher = {mathdoc},
     volume = {42},
     number = {3},
     year = {1991},
     zbl = {0748.49013},
     url = {http://geodesic.mathdoc.fr/item/AM2_1991__42_3_137418/}
}