?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Totik&rft.aufirst=Vilmos&rft.au=+Totik+Vilmos&rft.pages=302-305&rft.atitle=On+Problem+57+of+the+Scottish+Book&rft.date=2019&rft.issn=0236-5294&rft.volume=158&rft.issue=2&rft.title=Acta+Mathematica+Hungarica&rft.genre=article