1. [1] A. Lodi, S. Martello and D. Vigo: Recent advances on two-dimensional bin packing problems; Discrete Applied Mathematics, Vol. 123, Nos. 1–3, pp. 379–396 (2002)
2. [2] B. S. Baker, E. G. Coffman Jr and R. L. Rivest: Orthogonal packing in two dimensions; SIAM Journal on Computing, No. 9, pp. 846–855 (1980)
3. [3] C. N. Potts, S. V. Sevast’janov, V. A. Strusevich, L. N. Van Wassenhove and C. M. Zwaneveld: The two-stage assembly scheduling problem: complexity and approximation; Operations Research, Vol. 43, No. 2, pp. 346–355 (1995)
4. [4] D. E. Goldberg and R. Lingle Jr: Alleles, loci, and the traveling salesman problem; Proc. of the First International Conference on Genetic Algorithms and Their Applications, Vol. 154, Lawrence Erlbaum, pp. 154–159 (1985)
5. [5] L. N. Vicnete and P. H. Calamai: Bilevel and multi-level programming: A bibliography review; Journal of Global Optimization, Vol. 5, No. 3, pp. 291–306 (1994)