%0 Journal Article
%A Kosiński, Łukasz
%A Zwonek, Włodzimierz
%T Extension Property and Universal Sets
%J Canadian journal of mathematics
%D 2021
%P 717-736
%V 73
%N 3
%U http://geodesic.mathdoc.fr/articles/10.4153/S0008414X20000139/
%R 10.4153/S0008414X20000139
%F 10_4153_S0008414X20000139