1. Allen, J. F. (1983). Maintaining knowledge about temporal intervals. Communications of ACM, 26(11), pp. 832-843.
2. Awwad, R. E., & Ioannou, P. G. (2007). Floats in RSM: Repetitive scheduling method. In: Proceedings of the Construction Research Congress, Grand Bahama Island, The Commonwealth of the Bahamas, May 6-8, 2007, American Society of Civil Engineers, Reston, VA, pp. 1133-1140.
3. Bokor, O., & Hajdu, M. (2015). Investigation of critical activities in a network with point-to-point relations. Procedia Engineering, 123, pp. 198-207.
4. Crandall, K. C. (1973). Project planning with precedence lead/lag factors. Project Management Quarterly, 4(3), PMI-18-PMI-27.
5. Fazar, W. (1962). The origin of PERT. The Controller, 1962(December), pp. 598-621.