| title | ISBN-13 | year of publication |
|---|---|---|
| Agatha Christie: The Spirit and the Letter, a chirographic and semiotic study | 978-1-5054-4907-5 | 2014 |
| Georges Brassens: The Spirit and the Letter, a chirographic and semiotic study | 978-1-5054-4908-2 | 2014 |
| Joan Baez: The Spirit and the Letter, a chirographic and semiotic study | 978-1-5054-4913-6 | 2014 |
| Wolfgang Amadeus Mozart: The Spirit and the Letter, a chirographic and semiotic study | 978-1-5054-4915-0 | 2014 |