The Lie-algebraic structure of Lax type integrable nonlocal differential-difference equations. Neliniini Kolyvannya, [S. l.], v. 3, n. 1, p. 84–94, 2000. Disponível em: https://nosc.imath.kiev.ua/index.php/nosc/article/view/101. Acesso em: 12 apr. 2026.