by Ablamskyi, S. Ye, Kovtun, O. V., Ablamska, V. V.
Published in Вісник Харківського національного університету внутрішніх справ (30.09.2024)

by Nosov, V. V., Manzhai, O. V., Kovtun, V. O.
Published in Pravo ì bezpeka (28.09.2023)

by Venger, L. V., Kovtun, O. V., Savko, V. V.
Published in Oftalmologicheskiĭ zhurnal. (01.03.2022)

by Konovalova, N. V., Khramenko, N. I., Guzun, O. V., Slobodianyk, S. B., Kovtun, O. V.
Published in Oftalmologicheskiĭ zhurnal. (26.10.2022)

by Venger, L. V., Savko, V. V., Kovtun, O. V., Sokolov, V. M.
Published in Oftalmologicheskiĭ zhurnal. (2021)

by Kovtun, O. V.
Published in Sot͡s︡iolohichni studiï (15.05.2018)

by Romanenko, V. V., Somova, A. V., Kovtun, O. V.
Published in Pediatricheskai͡a︡ farmakologii͡a︡ : nauchno-prakticheskiĭ zhurnal Soi͡u︡za pediatrov Rossii (15.02.2014)

by Kovtun, O. V.
Published in Zapysky z ukraïnsʹkoho movoznavstva = Opera annua in linguistica ukrainiana (14.07.2024)

by Artemenko, S. F., Kovtun, O. V.
Published in Зернові культури (2022)

by Artemenko, S. F., Kovtun, O. V.
Published in Зернові культури (24.05.2019)

by Kovtun, O. V., Harmash, T. А., Khaidari, N. І.
Published in Zhytomyr Ivan Franko State University Journal. Рedagogical Sciences (31.10.2019)

by Венгер, Л.В., Ковтун, Олексій, Савко, В.В.
Published in Oftalmologicheskiĭ zhurnal. (30.06.2023)

by Stepanyuk, L.M., Kovtun, O.V., Vysotsky, O.B., Dovbush, T.I., Gulko, V.V.
Published in Mineralogical Journal (2023)

by Dudka, M. I., Yakunin, O. P., Kovtun, O. V., Hladkyi, O. V.
Published in Зернові культури (2021)

by Khaniukov, O. O., Sapozhnychenko, L. V., Smolyanova, O. V., Kovtun, O. V., Doroshenko, A. M.
Published in Visnyk problem biolohiï i medyt︠s︡yny (2020)

by Kryukov, A I, Garov, E V, Zelikovich, E I, Zagorskaya, E E, Kaloshina, A S, Garova, E E, Panasova, A S, Kovtun, O V, Khublaryan, A G
Published in Vestnik otorinolaringologii (2023)

by Voitenko, Yu. I., Kovtun, А. V.
Published in Мінеральні ресурси України (25.07.2018)

by Kovtun, O. V.
Published in "Scientific notes of V. I. Vernadsky Taurida National University", Series: "Philology. Journalism" (2021)

by Yu. Ye. Nykanorova, I. I. Lazareva, S. Ye. Shnyukov, O. V. Kovtun
Published in Мінеральні ресурси України (01.03.2015)

by Boivan, O. S., Kovtun, O. V.
Published in "Scientific notes of V. I. Vernadsky Taurida National University", Series: "Philology. Journalism" (2021)