Крокодил, 1933 , № 08
Krokodil Magazine
Крокодил, 1926 , № 02
Наука и жизнь #04 1984
Nauka i Zhizn Magazine
Наука и жизнь #12 1994
Meddlers In Time- Out of the frying pan, into the fire
Wayne Watson
Right Ascension
David Derrico
Declination