KhvostovaOlgaA.Country: RussiaCity: SaratovCompany: Saratov State University, Russia, 410012, Saratov, Astrakhanskaya street, 83 E-mail: hvostovaoa@info.sgu.ru Author's articles P. I. Bartenev and P. V. Annenkov Working on the Materials for A. S. Pushkin’s Biography