1. W. H. Ray and J. Szekely, Process Optimization ,1st ed., Wiley, New York (1973).
2. M. M. Denn, Optimization by Variational Methods ,1st ed., McGraw-Hill, New York (1969).
3. A. E. Bryson and Y. C. Ho, Applied Optimal Control ,1st ed., Blaisdell, Waltham, Massachusetts (1969).
4. L. Lapidus and R. Luus, Optimal Control of Engineering Processes ,1st ed., Blaisdell, Waltham, Massachusetts (1967).
5. A. Ramagopal, A. Kumar, and S. K. Gupta, Computational scheme for the calculation of molecular weight distributions for nylon-6 polymerization in homogeneous, continuous-flow stirred-tank reactors with continuous removal of water, Polym. Eng. Sci. 22, 849–856 (1982).