GREGOROVIČ, Jan a Lenka ZALABOVÁ. Geometric properties of homogeneous parabolic geometries with generalized symmetries. Differential Geometry and its Applications. AMSTERDAM: Elsevier, 2016, roč. 49, December, s. 388-422. ISSN 0926-2245. doi:10.1016/j.difgeo.2016.09.008.
GREGOROVIČ, Jan a Lenka ZALABOVÁ. Notes on symmetric conformal geometries. Archivum Mathematicum. 2015, roč. 51, č. 5, s. 287-296. ISSN 0044-8753. doi:10.5817/AM2015-5-287.
GREGOROVIČ, Jan a Lenka ZALABOVÁ. On Automorphisms with Natural Tangent Actions on Homogeneous Parabolic Geometries. Journal of Lie Theory. Lemgo (Germany): Heldermann Verlag, 2015, roč. 25, č. 3, s. 677-715. ISSN 0949-5932.
GREGOROVIČ, Jan. Classification of invariant AHS-structures on semisimple locally symmetric spaces. Central European Journal of Mathematics. WARSAW: VERSITA, 2013, roč. 11, č. 12, s. 2062-2075. ISSN 1895-1074. doi:10.2478/s11533-013-0318-5.
GREGOROVIČ, Jan. General construction of symmetric parabolic structures. Differential Geometry and its Applications. Amsterdam: Elsevier Science, 2012, roč. 30, č. 5, s. 450-476. ISSN 0926-2245. doi:10.1016/j.difgeo.2012.06.006.