The 75-th jubilee of L.Y. Kossovich

The article is devoted to the 75th anniversary of Leonid Yurievich Kossovich. He is a doctor of physical and mathematical sciences, professor, laureate of the state prize in science and technology, honorary worker of higher professional education, head of the department of mathematical theory of elasticity and biomechanics of Saratov State University, editor-in-chief of the journal "Izvestia Saratov University. New Series. Series "Mathematics. Mechanics. Informatics", knight of the Order of Friendship, Order of the Russian Orthodox Church of St. Macarius Metropolitan of Moscow III degree.