Depending on your nationality, you could need a visa when coming to Germany. The Federal Foreign Office of Germany explained the visa regulations.
To receive a visa for Germany you need a letter of invitation for the Europe Africa Conference 2017 of the PPS. Upon your request we prepare such a letter. Please provide the following information:
1. Full name (as in the passport)
2. Passport number
3. Address to which we have to send the letter
The letter will be sent by air mail so it can last a bit. Furthermore we will send you a scanned copy by e-mail.
If you questions, please contact PPS-Dresden@ipfdd.de.