"I. V. Nikonorov"@en-US . "Ivan Vasilʹevich" . "I." . "Ivan Vasil'evi-c Nikonorov" . "Ivan Vasilʹevich Nikonorov" . "Ivan Vasilʹevich Nikonorov"@en . "V." . "I.V Nikonorov" . . "Ivan"@en . "Vasilʹevich"@en . "I.V" . "Nikonorov"@en . "Vasil'evi-c" . . . "Ivan Vasil'evich Nikonorov" . . "Vasil'evich" . "Nikonorov, I. V. (Ivan Vasilʹevich)" . . .