Neumann, Frank Algorithms and Complexity, MPI for Informatics, Max Planck Society;
Neumann, F., Sudholt, D., & Witt, C. (2008). Rigorous Analyses for the Combination of Ant Colony Optimization and Local Search. In M. Dorigo, M. Birattari, C. Blum, M. Clerc, T. Stützle, & A. F. T. Winfield (Eds.), Ant Colony Optimization and Swarm Intelligence (pp. 132-143). Berlin: Springer. doi:10.1007/978-3-540-87527-7_12.