@article {MR1048660,
    AUTHOR = {Z{\u{a}}linescu, Constantin},
     TITLE = {On some types of second order convexity},
   JOURNAL = {An. \c Stiin\c t. Univ. Al. I. Cuza Ia\c si Sec\c t. I a Mat.},
  FJOURNAL = {Analele \c Stiin\c tifice ale Universit\u a\c tii ``Al. I.
              Cuza'' din Ia\c si. Sec\c tiunea I a Matematic\u a},
    VOLUME = {35},
      YEAR = {1989},
    NUMBER = {3},
     PAGES = {213--220},
      ISSN = {0041-9109},
     CODEN = {AUZMAV},
   MRCLASS = {26B25 (90C30)},
  MRNUMBER = {MR1048660 (91c:26017)},
MRREVIEWER = {Jia Liu Mei},
}