@MISC{HESSENBE.MIZ,
  AUTHOR = {Kusak, Eugeniusz and Leo\'nczuk, Wojciech},
  TITLE = {Hessenberg Theorem},
  NOTE = {Supported by RPBP.III-24.C6.},
  DAY = {02},
  MONTH = {October},
  YEAR = {1990},
  ADDRESS1 = {Warsaw University\\Bia{\l}ystok},
  ADDRESS2 = {Warsaw University\\Bia{\l}ystok},
  SUMMARY = { We prove the Hessenberg theorem which states that every
 Pappian projective space is Desarguesian.}}

