Наука и жизнь #11 1972
Nauka i Zhizn Magazine
Крокодил, 1938 , № 08
Krokodil Magazine
Крокодил, 1956 , № 27
Крокодил, 1952 , № 23
Right Ascension
David Derrico
Meddlers In Time- Out of the frying pan, into the fire
Wayne Watson
Declination