@mastersthesis{trummer_14,
 author = {Dietmar Trummer},
 month = {February},
 note = {supervised by G.~Raidl},
 school = {Vienna University of Technology, Institute of Computer Graphics and Algorithms},
 title = {Applying Ant Colony Optimization to the Periodic Vehicle Routing Problem with Time Windows},
 url = {https://www.ac.tuwien.ac.at/files/pub/trummer_14.pdf},
 year = {2014}
}