If I make a contract with someone that says I get exclusivity to publish and sell their works, and in return I give them some money, in what way do we need to d

If I make a contract with someone that says I get exclusivity to publish and sell their works, and in return I give them some money, in what way do we need to do copyright assignments? You don't, and in Germany, there's no such thing as copyright assignment - Urheberrecht is part of the author's moral rights and inalienable[1]. [1] http://en.wikipedia.org/wiki/Copyright_law_of_Germany#Transfer http://en.wikipedia.org/wiki/Copyright_law_of_Germany#Transf...