Payment is to be made annually after receipt of the invoice. For payment by credit card, please send your details (credit card number, card holder's name, expiration date, signature) via fax to +49 (0) 2624 – 948071.
The subscription runs concurrently with the calendar year starting from January. It can be backdated to cover the whole year or ordered for a part of the current year. Subscriptions are renewed automatically if not cancelled by October 31st
