2 citations to https://www.mathnet.ru/rus/tm4035

1. N. G. Marchuk, “One Class of Relativistically Invariant First-Order Equations”, Differ. Equ., 56:12 (2020), 1575–1586          
2. N. G. Marchuk, Continuum Mechanics, Applied Mathematics and Scientific Computing: Godunov's Legacy, 2020, 269