The CSGB Research Report falls under the Publication Policy of the Department of Mathematics, Aarhus Unviersity. The policy is listed in
Basically it lists what MATH-AU does and which rights you as the author has. In short by publishing in this series you give us the right to reproduce the publication online (and in print) while the author(s) retain all copyrights. It is the author(s)'s responsibility to make sure that they are allowed to publish within the CSGB Research Reports series, and to ensure this when publishing the final version in a journal. The Publication Policy explains this.