Sequential completeness versus Čech - completeness Frič, R. — 1978 Abstracta. 6th Winter School on Abstract Analysis
Sequential envelope and subspaces of the Čech-Stone compactification Frič, R. — 1972 General Topology and its Relations to Modern Analysis and Algebra
Sequentially complete spaces Frič, R.; Koutník, V. — 1977 General topology and its relations to modern analysis and algebra IV
Epireflective subcategories of convergence spaces Frič, R.; Hušek, M. — 1980 Abstracta. 8th Winter School on Abstract Analysis
Completion functors for Cauchy spaces. Fric, R.; Kent, Darrell C. — 1979 International Journal of Mathematics and Mathematical Sciences
A completion functor for Cauchy groups. Fric, R.; Kent, Darrell C. — 1981 International Journal of Mathematics and Mathematical Sciences