Question: Who was the Soviet aircraft designer that worked with Leonid Kerber?
Sentence (from "Leonid Kerber"): Leonid Lvovich Kerber ( Körber) (Russian: Леони́д Льво́вич Ке́рбер ) (June 17, 1903— October 9, 1993) was a Soviet radioengineer, expert in aviation equipment, long-time co-worker of Andrei Tupolev and his deputy during 1953-1968.
Relevant evidence: Yes