Background
Kloss was born in Moscow in the family of a military manitoba
Kloss was born in Moscow in the family of a military manitoba
He studied under Andrey Kolmogorov, Lev Cherepnin, Militsa Nechkina. He graduated from the Mechanics and Mathematics Faculty of the Moscow State University in 1956.
In 1958 he started working for the Union of the Soviet Socialist Republics Institute of Automatics. Since 1971 he worked at the Union of the Soviet Socialist Republics Institute of History under the Russian Academy of Sciences. He completed the thesis in the topic The Nikon Chronicle and the Russian Chronicles of the 16-17 centuries.
In 1980-1990 he simultaneously taught at the Moscow State University, the Moscow Institute of Physics and Technology and Russian State University for the Humanities.
He became a renown specialist in Kievan Rus" literature, specifically in Russian hagiography. He lectured in various universities of the United States, Poland, Norway, Russia.