@misc{Sokolnicki_Krzysztof_Characterizations_1979, author={Sokolnicki, Krzysztof}, volume={27}, number={3-4}, editor={Polska Akademia Nauk.}, editor={Państwowe Wydawnictwo Naukowe (1951–1992)}, copyright={Rights Reserved - Restricted Access}, address={Varsovie}, howpublished={online}, year={1979}, publisher={Państwowe Wydawnictwo Naukowe}, language={rus}, language={eng}, type={Text}, title={Characterizations of certain algebraic theories}, }