title: G T Zatsepin and the birth of gamma-ray astronomy
abstract: The centenary of G T Zatsepin, a well-recognized authority on cosmic ray physics and nuclear and neutrino astrophysics, offers an opportunity both to look back on the work he is well known for and to take a look at some of his lesser-known ideas, even to specialists. One example is his pioneering proposal to employ the Cherenkov emission from electromagnetic cascades in the upper atmosphere as a tool to search for local gamma-ray sources on the celestial sphere. First published by G T Zatsepin a
journal: Physics-Uspekhi