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Alexandar B Yanovski, “Gauge equivalent integrable equations on sl(3) with reductions”, J. Phys.: Conf. Ser., 621, 2015, 012017
Hui Ma, Derchyi Wu, “Twisted hierarchies associated with the generalized sine-Gordon equation”, Journal of Mathematical Physics, 52, no. 9, 2011, 093704
A. B. Yanovski, G. Vilasi, “Geometry of the Recursion Operators for the GMV System”, JNMP, 19, no. 3, 2012, 373
V. S. Gerdjikov, G. G. Grahovski, A. V. Mikhailov, T. I. Valchev, “Rational bundles and recursion operators for integrable equations on A.III-type symmetric spaces”, Theor Math Phys, 167, no. 3, 2011, 740
Georgi G. Grahovski, “The generalised Zakharov–Shabat system and the gauge group action”, Journal of Mathematical Physics, 53, no. 7, 2012, 073512
A. B. Yanovski, T. I. Valchev, “Pseudo-Hermitian Reduction of a Generalized Heisenberg Ferromagnet Equation. I. Auxiliary System and Fundamental Properties”, JNMP, 25, no. 2, 2021, 324
Derchyi Wu, “A twisted integrable hierarchy with $\mathbb D_2$D2 symmetry”, Journal of Mathematical Physics, 53, no. 10, 2012, 103708
A. B. Yanovski, T. I. Valchev, 793, Advanced Computing in Industrial Mathematics, 2019, 433
Tihomir I. Valchev, 1076, Advanced Computing in Industrial Mathematics, 2023, 166