L. I. Golovina was on the faculty of Moscow State University. I. M. Yaglom (1921-88) was affiliated with Moscow State Pedagogical Institute. He wrote several popular books on mathematics, including these Dover publications: Challenging Mathematical Problems with Elementary Solutions (with A. M. Yaglom) in two volumes, and The U.S.S.R. Olympiad Problem Book (with D. O. Shklarsky and N. N. Chentzov). I. S. Sominskii was on the faculty of the Novgorod Pedagogical Institute.