General contact by eMail or mail. Address:
Prof. Dr. Mario Birkholz
Skalitzer Str. 77, D-10997 Berlin, Germany
E-Mail: mb@mariobirkholz.de
Please do not send any handover letters, we do not have a regular regular office operation and thus no possibility to receive them. They will therefore be returned after a few weeks to the sender. If it has to be a registered letter, then please only a registered mail.