Since the 11th July 2000, when BTA was registered at the Court in Rome n. 300/2000, the former subscriptions as contributors to BTA are not any more valid.
All past 154 contributors as well as the new and potential ones are required to send a new subscription. All contributors who had their personal code before the above date should keep it.
Here are all names of the contributors who have filled in the new subscription form, together with the related date of publication in the list.

See also:

CONTRIBUTORS' LIST BY SUBSCRIPTION CODE
PERMANENT MANIFESTO ART & COMMUNICATION