Krajíček, Jan
A fundamental problem of mathematical logic.
Berlin: Springer, 1996. Annals of the Kurt Gödel Society, 2. ISBN 3-211-82796-X. ISSN 0947-577X. In: Collegium Logicum., s. 56-64
R&D Projects: GA AV ČR IAA1019602
http://hdl.handle.net/11104/0071293