?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Sevost%E2%80%99yanov%2C+%D0%95.+%D0%90.&rft.aulast=Sevost%E2%80%99yanov&rft.aufirst=%D0%95.+%D0%90.&rft.date=2017&rft.title=On+boundary+behavior+of+ring+Q-mappings+in+terms+of+prime+ends&rft.genre=proceeding