B. Zabavsky, 19 Oct, 2018

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B. Zabavsky, 19 Oct, 2018

Department of Algebra and Logic

Faculty of Mechanics and Mathematics

Ivan Franko National University of L'viv

1 Universytetska Str., 79000 Lviv, Ukraine

Tel: (+380 322) 394 172

E-mail: oromaniv at franko.lviv.ua