The Nonexistence of Certain Finite Projective Planes

@article{Bruck1949TheNO,
  title={The Nonexistence of Certain Finite Projective Planes},
  author={R. H. Bruck and H. J. Ryser},
  journal={Canadian Journal of Mathematics},
  year={1949},
  volume={1},
  pages={88 - 93}
}
A projective plane geometry π is a mathematical system composed of undefined elements called points and undefined sets of points (at least two in number) called lines, subject to the following three postulates: (P1) Two distinct points are contained in a unique line. (P2) Two distinct lines contain a unique common point. (P3) Each line contains at least three points. 

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