1. Araque, J.R. (1990) Lots of combs of different sizes for vehicle routing. Discussion Paper, Centre for Operations Research and Econometrics, Catholic University of Louvain, Belgium.
2. Araque, J.R., L.A. Hall & T.L. Magnanti (1990) Capacitated trees, capacitated routing and associated polyhedra. Discussion Paper, Centre for Operations Research and Econometrics, Catholic University of Louvain, Belgium.
3. Assad, A.A. & B.L. Golden (1995) Arc routing methods and applications. In M.O. Ball, T.L. Magnanti, C.L. Monma & G.L. Nemhauser (Eds.) Network Routing. Handbooks of Operations Research and Management Science, 8. Amsterdam: North Holland.
4. Augerat, P., J.M. Belenguer, E. Benavent, A. Corberán, D. Naddef & G. Rinaldi (1995). Computational results with a branch-and-cut code for the capacitated vehicle routing problem. Research report RR949-M, ARTEMIS-IMAG, France.
5. Ball, M.O. & M.J. Magazine (1988) Sequencing of insertions in printed circuit board assembly. Oper. Res., 36, 192–201.