APA (7th ed.) Citation

Kopytko, B. I., Osypchuk, M. M., Kopytko, B. I., Osypchuk, M. M., Копитко, Б. I., & Осипчук, М. М. (2023). Mykola Ivanovych Portenko (on his 80th birthday). Institute of Mathematics, NAS of Ukraine. https://doi.org/10.3842/umzh.v75i11.7250

Chicago Style (17th ed.) Citation

Kopytko, B. I., M. M. Osypchuk, B. I. Kopytko, M. M. Osypchuk, Б. I. Копитко, and М. М Осипчук. Mykola Ivanovych Portenko (on His 80th Birthday). Institute of Mathematics, NAS of Ukraine, 2023. https://doi.org/10.3842/umzh.v75i11.7250.

MLA (8th ed.) Citation

Kopytko, B. I., et al. Mykola Ivanovych Portenko (on His 80th Birthday). Institute of Mathematics, NAS of Ukraine, 2023. https://doi.org/10.3842/umzh.v75i11.7250.

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