1. Gerhard, W., Heike, H., Holger, S.: An improved typology of cutting and packing problems. Duropean J. Operat. Res. 183, 1109–1130 (2007). Science Direct
2. Andrea, G., Abdur, J., Massimo., L., Fabio., S.: Solving the problem of packing equal and unequal circles in a circular container. J. Glob. Optim. (2010)
3. Eva, H.: Two-dimensional packing utilizing evolutionary algorithm and other meta-heuristic methods. A thesis submitted to the University of Wales for the Degree of Doctor of Philosophy (2000)
4. Baosu, G., Qingjin, P.: Irregular Packing Based on Principal Component Analysis Methodology. IEEE Access (2018)
5. Bili, C., Yong, W., Shuangyuan, Y.: A hybrid demon algorithm for the two-dimensional orthogonal strip packing problem. In: Mathematical Problems in Engineering, Hindawi Publishing Corporation, vol. 2015, p. 14 (2015). Article ID 541931