Puttkamer, Timm von Max Planck Institute for Mathematics, Max Planck Society;
http://hss.ulb.uni-bonn.de/2018/5151/5151.htm (Any fulltext)
Puttkamer, T. v. (2018). On the finiteness of the classifying space for virtually cyclic subgroups. PhD Thesis, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn.