Rybicki, Tomasz: On admissible groups of diffeomorphisms.
Slovák, Jan (ed.): Proceedings of the 16th Winter School "Geometry and Physics".
Circolo Matematico di Palermo, Palermo, 1997.
Barit, W.: Contraction of some spaces of homeomorphisms.
Novák, J. (ed.): General Topology and its Relations to Modern Analysis and Algebra.
Proceedings of the Third Prague Topological Symposium, 1971.
Academia Publishing House of the Czechoslovak Academy of Sciences, Praha, 1972.