The theory of semisets.
[By] Petr Vopěnka and Petr Hájek.
APA Citation
Vopěnka, P., Hájek, P. (1972). The theory of semisets. Amsterdam: North-Holland Pub. Co..
MLA Citation
Vopěnka, Petr, and Petr Hájek. The Theory of Semisets. Amsterdam: North-Holland Pub. Co., 1972.
Warning: These citations may not always be complete (especially for serials).