V. A. Bazhanov, “The Origins And Becoming Of Non-Classical Logic In Russia (XIX - the turn of XX century),” Zwischen traditioneller und moderner Logik. Nichtklassiche Ansatze. Paderborn: Mentis-Verlag, 2001, S. 205-217.

The work deals with the origins and early stage of becoming of non-classical logic in Russia. The special attention is paid to the intellectual legacy of N. A. Vasiliev and his imaginary logic.