[2] HUGHES D. R.-PIPER F. C.:
Projective Planes. Springer-Verlag, New York-Heidelberg-Berlin, 1973.
MR 0333959 |
Zbl 0267.50018
[3] JURGA R.: Thesis. Košice, 1990. (Slovak)
[4] JURGA R.:
Some combinatorial properties of conics in the Hjelmslev plane. Math. Slovaca 45 (1995), 219-226.
MR 1361814 |
Zbl 0853.05018
[5] RAY-CHADHURI D. K.:
Some results on quadrics in finite projective geometry based on Galois fields. Canad. J. Math. 14 (1962), 129-138.
MR 0133725