Group-invariant solutions of Gibbons-Tsarev equation / Aleksandra LELITO, Oleg MOROZOV // W: Mathematics in technical and natural sciences : 14\textsuperscript{th} conference : Kościelisko, 18\textsuperscript{th}–24\textsuperscript{th} September 2015. — [Polska : s. n.], [2015]. — S. 15. — Bibliogr. s. 15

Group-invariant solutions to Khokhlov-Zabolotskaya equation / Aleksandra LELITO, Oleg MOROZOV // W: Symmetry and integrability of equations of mathematical physics [Dokument elektroniczny] : international workshop in honor of Wilhelm Fushchych : Kyiv, Ukraine, December 17–20, 2016. — Wersja do Windows. — Dane tekstowe. — [Ukraine : s. n.], [2016]. — ekran 1. — Tryb dostępu: https://www.imath.kiev.ua/ appmath/Abstracts2016/Lelito.html [2017-10-06]

Nonlocal symmetries of Plebański's second heavenly equation / Oleg MOROZOV, Aleksandra LELITO // W: Mathematics in technical and natural sciences : 15\textsuperscript{th} conference : Kościelisko, 17\textsuperscript{th}–22\textsuperscript{nd} September 2017. — [Kościelisko : s. n.], [2017]. — S. [1]