- Valera Berestovskii, Conrad Plaut, “Covering group theory for topological groups”, Topology and its Applications, 114, № 2, 2001, 141
- Žiga Virk, Andreas Zastrow, “A homotopically Hausdorff space which does not admit a generalized universal covering space”, Topology and its Applications, 160, № 4, 2013, 656
- Valera Berestovskii, Conrad Plaut, “Covering group theory for compact groups”, Journal of Pure and Applied Algebra, 161, № 3, 2001, 255
- Valera Berestovskii, Conrad Plaut, “Uniform universal covers of uniform spaces”, Topology and its Applications, 154, № 8, 2007, 1748
- Conrad Plaut, “Quotients of uniform spaces”, Topology and its Applications, 153, № 14, 2006, 2430
- Conrad Plaut, “An equivalent condition for a uniform space to be coverable”, Topology and its Applications, 156, № 3, 2009, 594
- Matija Cencelj, Jerzy Dydak, Aleš Vavpetič, Recent Progress in General Topology III, 2014, 165