 One of his most noted works is "Children's Encyclopaedia" (1959) that has since its publication enjoyed almost a cult following – its structure offers, besides information for beginning readers, more detailed information for children who wish to learn more about any of the subjects.Other works include "The River" (1962, co-authored by Karel Friedrich), "The Great Picture Book for Children" (1976), "The Great Animal Picture Book" (1981; both together with Milena Lukešová), and "Merry Tales – And What Else?