@article {MR985567,
    AUTHOR = {Kawski, Matthias},
     TITLE = {Stabilization of nonlinear systems in the plane},
   JOURNAL = {Systems Control Lett.},
  FJOURNAL = {Systems \& Control Letters},
    VOLUME = {12},
      YEAR = {1989},
    NUMBER = {2},
     PAGES = {169--175},
      ISSN = {0167-6911},
     CODEN = {SCLEDC},
   MRCLASS = {93D15 (93C10)},
  MRNUMBER = {MR985567 (90i:93096)},
MRREVIEWER = {K. B. Datta},
}