@article{AM2_1991__42_3_137422,
     author = {Kazimierz Nikodem},
     title = {On the support of midconvex operators. {(Summary).}},
     journal = {Aequationes mathematicae},
     pages = {119--119},
     publisher = {mathdoc},
     volume = {42},
     number = {3},
     year = {1991},
     zbl = {0747.39006},
     url = {http://geodesic.mathdoc.fr/item/AM2_1991__42_3_137422/}
}