Alexander Shen, Nikolai K. Vereshchagin. Basic set theory. Volume 17 of Student mathematical library, American Mathematical Society, 2002.
@book{0014725, title = {Basic set theory}, author = {Alexander Shen and Nikolai K. Vereshchagin}, year = {2002}, researchr = {https://researchr.org/publication/0014725}, cites = {0}, citedby = {0}, volume = {17}, series = {Student mathematical library}, publisher = {American Mathematical Society}, isbn = {978-0-8218-2731-4}, }