1. Barcia R. M. “Construction Production Planning and Optimal Control ” thesis presented to the Univ. of Waterloo at Waterloo Ontario Canada in 1984 in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
2. Canon M. D. Cullum Jr. C. D. and Polak E. Theory of Optimal Control and Mathematical Programming McGraw‐Hill New York N.Y. 1970.
3. McCormick G. P. Nonlinear Programming: Theory Algorithms and Applications Wiley New York N.Y. 1983.