| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The International Telegraph and Telephone Consultative Committee (CCITT) Red Book Volume VIII - Fascicle VIII.7 - Data Communications Message Handling System - VIIIth Plenary Assembly 8-19 October 1984 | 978-92-61-O2361-4 (92-61-O2361-4) | 1985 |