| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| There Are Cats in This Book | 978-1-4063-2499-0 (1-4063-2499-X) | 2009 | Viviane Schwarz |
| There Are No Cats in This Book | 978-1-4063-3102-8 (1-4063-3102-3) | 2011 | " |
S S · S. Schwarz · Silvia Schwarz · V. S. · Viviane Schwarz