ZhETF, Vol. 45,
p. 1595 (April 1964)
(English translation - JETP,
The issue content is only available in english translation.
The Energy Spectrum of Primary Cosmic Rays and Their Composition in the Ultra-High-Energy Range
S.I. Syrovatskii, Yu. A. Fomin, G.B. Khristiansen
Received: May 17, 1963