Letter Reply to a reader who was dissatisfied with the Yurii Zhuravlev's theory presented by the journal "Znanie-sila". /Handwritten text./ Date: 30.11.1987(?) Original document language: russian Authors: Andrei Petrovich Ershov Persons: Yurii Ivanovich Zhuravlev Addressee: R. V. Tyukhtij
