Stanisław Lem

Dzienniki gwiazdowe is a 1957 collection of short stories by Polish writer Stanisław Lem, expanded in 1971 around the character of space traveller Ijon Tichy. The collection was published in English in two volumes, The Star Diaries and Memoirs of a Space Traveller.

The Invincible is a science fiction novel written by Stanisław Lem and published in 1964. The Invincible originally appeared as the title story in Lem's collection Niezwyciężony i inne opowiadania. A translation into German was published in 1967; an English translation by Wendayne Ackerman of the German translation …