APA (7th ed.) Citation

Pyekhtyeryev, V. O., & Trеtyak, K. S. Congruences of the semigroup IO_N (in Ukrainian). Ivan Franko National University of Lviv.

Chicago Style (17th ed.) Citation

Pyekhtyeryev, V. O., and K. S. Trеtyak. Congruences of the Semigroup IO_N (in Ukrainian). Ivan Franko National University of Lviv.

MLA (9th ed.) Citation

Pyekhtyeryev, V. O., and K. S. Trеtyak. Congruences of the Semigroup IO_N (in Ukrainian). Ivan Franko National University of Lviv.

Warning: These citations may not always be 100% accurate.