On the Representation and Multiplication of Basic Alternating Cycle Matrices
On the sectional irregularity of congruences.
On the size of maximal caps in .
On the smallest minimal blocking sets in projective space generating the whole space.
On the spectrum of resolvable orthogonal arrays invariant under the Klein group K4.
On the Structure of Finite Collineation Groups Containing Symmetries of Generalized Quadrangles.
On the superadditivity of secant defects
On the tangency of sets in generalized metric spaces for certain functions of the class
On the Tetrahedroid as a particular case of the 16-nodal quartic surface.
On the theorems of central axonometry.
On the theorems of Drake and Lenz.
On the upper and lower chromatic numbers of BSQSs(16).
On the upward motion of a double cone on an inclined plane.
On the volume of a symmetric tetrahedron in hyperbolic and spherical spaces.
On the volume of hyperbolic polyhedra.
On the volume of unbounded polyhedra in the hyperbolic space.
On the volumes of hyperbolic 5-orthoschemes and the Trilogarithm.
On topological Tits buildings and their classification
On universal groups and three-manifolds.
On Veldkamp lines.