Charakterisierung der kompakten, zusammenhängenden Moufang-Hughes-Ebenen anhand ihrer Kollineationen. Hermann Hähl (1986) Mathematische Zeitschrift
Classification of 4-Dimensional Generalized Symmetric Planes. Hans-Peter Seidel (1991) Forum mathematicum
Compact 16-Dimensional Projective Planes with Large Collineation Groups. H. Salzmann (1982) Mathematische Annalen
Compact 16-dimensional Projective Planes with Large Collineation Groups. II. Helmut Salzmann (1983) Monatshefte für Mathematik
Compact 16-dimensional Projective Planes with Large Collineation Groups. III. Helmut Salzmann (1984) Mathematische Zeitschrift
Compact Disconnected Planes, Inverse Limits and Homomorphisms. Theo Grundhöfer (1988) Monatshefte für Mathematik
Constructing non-regular algebraic spreads with asymplecticly complemented regulization. Riesinger, Rolf (2005) Beiträge zur Algebra und Geometrie
Convex isometric folding. Elkholy, E.M. (2000) International Journal of Mathematics and Mathematical Sciences