@article{105958, author = {Karel \v Cuda and Petr Vop\v enka}, title = {Real and imaginary classes in the alternative set theory}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {020}, year = {1979}, pages = {639-653}, zbl = {0433.03031}, mrnumber = {555180}, language = {en}, url = {http://dml.mathdoc.fr/item/105958} }
Čuda, Karel; Vopěnka, Petr. Real and imaginary classes in the alternative set theory. Commentationes Mathematicae Universitatis Carolinae, Tome 020 (1979) pp. 639-653. http://gdmltest.u-ga.fr/item/105958/
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Endomorphic universes and their standard extensions, Comment. Math. Univ. Carolinae 20 (1979), 605-629. (1979) | MR 0555178