1. Kelley JE, Walker MR. Critical path planning and scheduling. In: Proceedings of the Eastern joint computer conference, Boston; 1959. p. 160–73.
2. Applications of a technique for research and development program evaluation;Malcohm;Operations Research,1959
3. Roy B, Sussmann B. Contribution de la theorie des graphs al’etude des problems d’ordonnancement in Les Problems d’Ordonnancement—Applications et Methodes. Dunod, Paris, France; 1964. p. 109–25.
4. Fondahl JW. A non-computer approach to the critical path method for the construction industry. Technical Report No. 9, Department of Civil Engineering, Stanford University; 1962.
5. Fondahl JW. Methods for extending the range of non-computer critical path applications. Technical Report no. 47, Department of Civil Engineering, Stanford University; 1964.