1. Bartholdi, J. Spacefilling Curves and Fractals, http://homer.isye.gatech.edu/people/faculty//John_Bartholdi/mow.html, 1997.
2. Baybars, Ilker. A Survey of Exact Algorithms for the Simple Assembly Line Balancing Problem. Management Science, Vol. 32, No. 8, August 1986.
3. Black, J. T. The Design of the Factory with a Future. USA, McGraw Hill Inc., 1991.
4. Cela, E. The Quadratic Assignment Problem: Theory and Algorithms. Kluwer Academic Publishers, The Netherlands, 1998.
5. Ghinato, P., Fujii, S. and Morita, H. A Basic Approach to the Multifunction Workers Assignment Problem in U-shaped Production Lines. In: Proc. of the 3rd Int'l Congress of Industrial Eng., Brazil, Oct. 1997.