Cambridge University Press · Gabler Verlag
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Sperner Theory | 978-0-521-45206-9 (0-521-45206-6) | 1997 | ||
| Sperner Theory in Partially Ordered Sets | 978-3-322-00651-6 (3-322-00651-4) | 1985 | Hans D Gronau | |