?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Kov%C3%A1cs&rft.au=+Kov%C3%A1cs+L.+G.&rft.aufirst=L.+G.&rft.issn=0001-6969&rft.volume=26&rft.atitle=An+embedding+theorem+for+some+countable+groups&rft.title=Acta+scientiarum+mathematicarum&rft.date=1965&rft.pages=139-142&rft.issue=1-2&rft.genre=article