Iscrizione presente o passata nei seguenti gruppi:
ACM - Association for Computing Machinery.
IEEE Computer Society.
Istituto di Cibernetica non lineare per lo studio di sistemi complessi (PA).
SETI Institute.
International acknowledgements and collabotations for studies and development in the field of Number Theory.
Acknowledgement for International Who’s Who 2005.
Delphi Team, Rome.
Team OS/2 Italy.