Optimization and approximation in deterministic sequencing and scheduling: A survey. Graham, R., Lawler, E., Lenstra, J., & Kan, A. R. Ann. Discrete Math, 5:287–326, 1979.
bibtex   
@article{GrLaLK79,
        AUTHOR = "R.L. Graham and E.L. Lawler and J.K. Lenstra and A.H.G. Rinnooy Kan",
        TITLE = "Optimization and approximation in deterministic sequencing and
                 scheduling: {A} survey",
        JOURNAL = "Ann. Discrete Math",
        VOLUME = 5,
        PAGES = "287--326",
        YEAR = 1979
}

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