A. A. Stefanov

Soliton equations related to the affine Kac-Moody algebra D4(1)

V. Gerdjikov, A. A. Stefanov, S. Varbev, 2014, 1412.2383.

Riemann-Hilbert Problems, Polynomial Lax Pairs, Integrable Equations and Their Soliton Solutions

V. Gerdjikov, A. A. Stefanov, 2023, Symmetry.