| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Mobile instant messaging | 978-1-84311-164-1 (1-84311-164-0) | 2002 |
| Mobile messaging: Revenues, profits and business cases from SMS to MMS | 978-1-84311-129-0 (1-84311-129-2) | 2001 |
| Plotting the future for MVNOs: The mobile ISP evolution | 978-1-84311-005-7 (1-84311-005-9) | 2001 |