Prykarpatsky, Y.A., Kycia, R. and Prykarpatski, A.K. 2021. On the Bogolubov’s chain of kinetic equations, the invariant subspaces and the corresponding Dirac type reduction. Annals of Mathematics and Physics. 4, 1 (Oct. 2021), 074–083. DOI:https://doi.org/10.17352/amp.000026.