It is hard to say how many portraits of the poet Anna Akhmatova (1889-1966) exist – she was painted by many famous artists of the 20th century. It is hard to say how many portraits of Russian poet ...

Adolph-Andrei Pavlovich Yushkevich was a Soviet historian of mathematics, leading expert in medieval mathematics of the East and the work of Leonhard Euler. He is a winner of George Sarton Medal by ...