2 citations to https://www.mathnet.ru/rus/mmo597

1. Dmitri I. Panyushev, Oksana S. Yakimova, Progress in Mathematics, 330, Representations and Nilpotent Orbits of Lie Algebraic Systems, 2019, 441  
2. F. Fauquant-Millet, P. Lamprou, “Polynomiality for the Poisson centre of truncated maximal parabolic subalgebras”, J. Lie Theory, 28:4 (2018), 1063–1094