2 citations to https://www.mathnet.ru/eng/mmj201

1. C. Wayne, T. Kappeler, G. Kokarev, W. Craig, A. Piatnitsky, I. Chueshov, A. Shirikyan, L. H. Eliasson, “Sergei Borisovich Kuksin (on his 60th birthday)”, Russian Math. Surveys, 71:1 (2016), 167–173                
2. Kokarev G., “On Geodesic Homotopies of Controlled Width and Conjugacies in Isometry Groups”, Group. Geom. Dyn., 7:4 (2013), 911–929