1. Pinedo M, Chao X. Operations scheduling with applications in manufacturing and services. Irwin/McGraw Hill, Homewood, IL/New York: 1991.
2. Complexity of single machine, multi-criteria scheduling problems;Chen;European Journal of Operational Research,1993
3. Lee CY, Vairaktarakis GL. Complexity of single machine hierarchical scheduling: a survey, In: Pardalos PM, Editor. Complexity in numerical optimization. Singapore: World Scientific, 1993. p. 269–98.
4. Multiple and bicriteria scheduling: a literature survey;Nagar;European Journal of Operational Research,1995
5. Bruno J, Coffman EG, Sethi R. Scheduling algorithms to minimize mean flow time. Proceedings of the IFIP Congress 74, Amsterdam, North-Holland, 1974. p. 504–10.