For citations:

Khasanov M.M., Rakhimov I.D. Integration of the KdV equation of negative order with a free term in the class of periodic functions. Chebyshevskii Sbornik. 2023;24(2):266-275. (In Russ.) https://doi.org/10.22405/2226-8383-2023-24-2-266-275