2 citations to https://www.mathnet.ru/eng/rm9347

1. Geir Agnarsson, “The Flag Polynomial of the Minkowski Sum of Simplices”, Ann. Comb., 17:3 (2013), 401  
2. V. M. Buchstaber, N. Yu. Erokhovets, “Polytopes, Fibonacci numbers, Hopf algebras, and quasi-symmetric functions”, Russian Math. Surveys, 66:2 (2011), 271–367