@article {MR0460999,
    AUTHOR = {Z{\u{a}}linescu, Constantin},
     TITLE = {An algorithm for best approximation by elements of cones in
              {B}anach spaces},
   JOURNAL = {Bull. Math. Soc. Sci. Math. R. S. Roumanie (N.S.)},
    VOLUME = {20(68)},
      YEAR = {1976},
    NUMBER = {1-2},
     PAGES = {199--211 (1977)},
   MRCLASS = {41A65},
  MRNUMBER = {MR0460999 (57 \#987)},
}