1. Karp, R.M.: Reducibility among combinatorial problems. In: Miller, R.E., Thatcher, J.W. (eds.) Complexity of Computer Computations. Plenum Press, New York (1972)
2. Helgeson, W.P., Birnie, D.P.: Assembly line balancing using the ranked positional weight technique. J. Indus. Eng. 12(6), 394–398 (1961)
3. Kilbridge, M.D., Wester, L.: A heuristic method of assembly line balancing. J. Indus. Eng. 12(4), 292–298 (1961)
4. Moodie, C.L., Young, H.H.: A heuristic method of assembly line balancing for assumptions of constant or variable work element times. J. Indus. Eng. 16(1), 23–29 (1965)
5. Hackman, S.T., Magazine, M.J., Wee, T.S.: Fast, effective algorithms for simple assembly line balancing problems. Oper. Res. 37(6), 916–924 (1989)