Christian Raack received his diploma (master's) degree in mathematics from the Technical University Berlin in 2006 and later his Ph.D. in 2012. As a full-time researcher at the Zuse Institute Berlin he has been involved in a large variety of projects mainly stemming from optimization problems in the telecommunications sector. In this thesis, the author develops methods in mathematical optimization to dimension networks at minimal cost. The considered planning problems typically arise in the strategic design of telecommunication or public transport networks and also in logistics. Given...