1.
Yildirim O, Caglak S. On the Lie symmetries of the boundary value problems for differential and difference sine-Gordon equations. M [Internet]. 2021 Jun. 30 [cited 2025 Aug. 18];102(2):142-53. Available from: http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/427