1. Castelino, K., D’Souza, R., Wright, P. K. (2005). Tool-path optimization for minimizing airtime during machining. Mechanical Engineering Department. University of California at Berkeley, Berkeley, CA 94720, USA, 2005.
2. Ant algorithms for discrete optimization;Dorigo;Artificial Life,1999
3. The ant system: optimization by a colony of cooperating agents;Dorigo;IEEE Transactions on Systems, Man and Cybernetics,1996
4. Optimization of hole making operations: a tabu-search approach;Kolahan;International Journal of Machine Tools & Manufacture,2000
5. Exact and approximate nondeterministic tree-search procedures for the quadratic assignment problem;Maniezzo;INFORMS Journal on Computing,1999