On isotropic congruences of lines in elliptic three-space. Odehnal, Boris — 2005 Mathematica Pannonica
Equiform kinematics and the geometry of line elements. Odehnal, Boris; Pottmann, Helmut; Wallner, Johannes — 2006 Beiträge zur Algebra und Geometrie
Factor-group-generated polar spaces and (multi-)qudits. Havlicek, Hans; Odehnal, Boris; Saniga, Metod — 2009 SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]