2 citations to https://www.mathnet.ru/eng/jmag534

1. D. Zakora, “On properties of root elements in the problem on small motions of viscous relaxing fluid”, Zhurn. matem. fiz., anal., geom., 13:4 (2017), 402–413    
2. D. Zakora, “On the spectrum of rotating viscous relaxing fluid”, Zhurn. matem. fiz., anal., geom., 12:4 (2016), 338–358