. "Andrei" . "CHEKANOV" . "Andreĭ Aleksandrovich Chekanov"@en . "Andrei Aleksandrovich Chekanov"@en . "A. A. Chekanov" . "Chekanov"@en . "A." . "A. A. Chekanov" . . . "A." . "Andreĭ"@en . "CHEKANOV, Andrei Aleksandrovich, and RZHONSNITSKY (Boris Nikolaevich)" . "and RZHONSNITSKY (Boris Nikolaevich) Andrei Aleksandrovich CHEKANOV" . . "Aleksandrovich"@en . "A. A." . . .