1. A new rank based version of the ant system: A computational study;Bullnheimer;Central European Journal for Operations Research and Economics,1999
2. QAPLIB-quadratic assignment problem library;Burkard;European Journal of Operational Research,1991
3. A taxonomy and an empirical anlysis of multiple objective ant colony optimization algorithms for bi-criteria TSP;García-Martínez;European Journal of Operational Research,2007
4. The quadratic assignment problem: Theory and algorithms;Cela,1998
5. Analysis of the best–worst ant system and its variants on the QAP;Cordón,2002