Крокодил, 1948 , № 28
Krokodil Magazine
Крокодил, 1929 , № 24
Техника - молодежи №07 1985
Tekhnika Molodezhi Magazine
Наука и жизнь #03 1991
Nauka i Zhizn Magazine
The Journey (Guardians of Ga'hoole)
Kathryn Lasky
Guardians of Ga'hoole (2)