| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Lens: The Low Energy Neurofeedback System | 978-1-138-13602-1 (1-138-13602-6) | 2016 |
| LENS: The Low Energy Neurofeedback System | 978-0-7890-3568-4 (0-7890-3568-5) | 2007 |
C.D. · C.H. · C. Hammond · D,. H.. · D. Hammond