International Literary Contest "For Young People of the Nuclear Age" Prize (1965)
European Prize for Children`s Literature (P. P. Vergerio Prize, 1968)
The diploma of IBBY Honours List (1970)
Deutscher Jugendbuch Prize (1970)
Bancarellino Nationale Italiana Prize (1970)
H. C. Andersen Special Honours List (1979)
Title of Meritorious Artist (1980)
