Крокодил, 1958 , № 34
Krokodil Magazine
Наука и жизнь #01 1958
Nauka i Zhizn Magazine
Крокодил, 1923 , № 18
Техника - молодежи №03 1970
Tekhnika Molodezhi Magazine
The Lost Train of Thought
John Hulme
The Frog Princess
E. D. Baker