Arkady Strugatsky (1925-1991) and Boris Strugatsky (1931-2012) began to collaborate in the early 1950s after Arkady had studied English and Japanese and worked as a technical translator and editor and Boris was a computer mathematician at Pulkova astronomical observatory.
The best Soviet SF writers - THE ENCYCLOPEDIA OF SCIENCE FICTION A thoroughly good book ... robust, imaginative, satisfying An enjoyable, exciting, and gratifying novel - NEW YORK TIMES