Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Charatonik Janusz Jerzy and Charatonik Wlodzimierz J.,Induced MO-mappings,Tsukuba Journal of Mathematics,0387-4982,Institute of Mathematics University of Tsukuba,1999-10,23,2,245-252,https://cir.nii.ac.jp/crid/1050282677600343424,