| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Contributions to Vertebrate Evolution / Mechanics of the Feeding of the Mallard : The Lingual Apparatus and the Suction-Pressure Pump Mechanism of Straining. | 978-3-8055-2424-7 (3-8055-2424-2) | 1977 | A F Gerritsen · J P van Kranenburg-Voogd | |
| The Feeding System of the Pigeon | 978-0-387-11332-6 (0-387-11332-0) | 1982 | ||