@article {MR898213,
    AUTHOR = {Z{\u{a}}linescu, C.},
     TITLE = {Solvability results for sublinear functions and operators},
   JOURNAL = {Z. Oper. Res. Ser. A-B},
  FJOURNAL = {Zeitschrift f\"ur Operations Research. Serie A. Serie B},
    VOLUME = {31},
      YEAR = {1987},
    NUMBER = {3},
     PAGES = {A79--A101},
      ISSN = {0340-9422},
   MRCLASS = {90C25 (90C30)},
  MRNUMBER = {MR898213 (89a:90115)},
MRREVIEWER = {Christian Malivert},
}