PERSONALIA : Igor Ivanovich Tkachev (on his 60th birthday). (8th August 2017) - Berezin, V A; Gorbunov, D S; Dolgov, A D; Kravchuk, L V; Matveev, V A; Rubakov, V A; Semikoz, D V; Starobinskii, A A; Tinyakov, P G; Troitskii, S V; Shaposhnikov, M E; Shtern, B E