Трактат Генриха Рэтеля «О жизни Ивана Васильевича» 1588 г.: проблема авторства
The authorship problem of the treatise “About Ivan Vasilyevich`s life” by Henry Ratel is investigated. The author’s biography and his literary heritage are considered. The author supposes that Henry Ratel`s work has an independent character in respect of Pavel Oderborn`s writing. The last one acts only as a basic source of the investigated work.