On configuration of arguesian spaces
On configurations in 3-space without elementary planes and on the number of ordinary planes.
On Desargues geometrization of the characteristic of a skew field.
On elations in semi-transitive planes.
On flag-transitive anomalous -geometries.
On free constructions.
On Groupoids Having a Linear Congruence Class Geometry.
On Havlíček-Tietze configuration in some non-Desarguesian planes
On one construction of all quasifields of order 9
On orthogonality in nets
On ovoids of .
On projective planes of order 20
On Projective Planes of Type (5, m).
On Rusakov’s -ary -groups
Properties of -ary groups connected with the affine geometry are considered. Some conditions for an -ary -group to be derived from a binary group are given. Necessary and sufficient conditions for an -ary group -derived from an additive group of a field to be an -group are obtained. The existence of non-commutative -ary -groups which are not derived from any group of arity for every , is proved.
On S. Gołąb's characterization of the anharmonic ratio
On the automorphism group of planes of Figueroa type
On the dimensions of automorphism groups of four-dimensional double loops.
On the fixed point of a collineation of the real projective plane.
On the geometry of field extensions.
On the geometry of symplectic involutions.