Библиографическая ссылка:
Морозов О.И., Lelito A. Nonlocal symmetries of Plebanski’s second heavenly equation. // Journal of Nonlinear Mathematical Physics. 2018. Vol. 25, Iss. 2. С. 188-197 https://www.tandfonline.com/toc/tnmp20/25/2?nav=tocList.
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