Aleksandr Solzhenitsyn's period of official favour proved to be short-lived, however. Ideological strictures on cultural activity in the Soviet Union tightened with Nikita Khrushchev's fall from power in 1964, and Solzhenitsyn met first with increasing criticism and then with overt harassment from the authorities when he emerged as an eloquent opponent of repressive government policies. After the publication of a collection of his short stories in 1963, he was denied further official publication of his work, and he resorted to circulating them in the form of samizdat (“self-published”) literature—i.e., as illegal literature circulated clandestinely—as well as publishing them abroad.
The following years were marked by the foreign publication of several ambitious novels that secured Aleksandr Solzhenitsyn's international literary reputation. V kruge pervom (1968; The First Circle) was indirectly based on his years spent working in a prison research institute as a mathematician. The book traces the varying responses of scientists at work on research for the secret police as they must decide whether to cooperate with the authorities and thus remain within the research prison or to refuse their services and be thrust back into the brutal conditions of the labour camps. Rakovy korpus (1968; Cancer Ward) was based on Solzhenitsyn's hospitalization and successful treatment for terminally diagnosed cancer during his forced exile in Kazakstan during the mid-1950s. The main character, like Aleksandr Solzhenitsyn himself, was a recently released inmate of the camps. -- © Encyclopædia Britannica, Inc.