@incollection{Kek19, author = {Sie Long Kek and Sy Yi Sim and Wah June Leong and Kok Lay Teo}, title = {Conjugate Gradient Approach for Discrete Time Optimal Control Problems with Model-Reality Differences}, booktitle = {Control Theory in Engineering}, publisher = {IntechOpen}, address = {Rijeka}, year = {2019}, editor = {Constantin Volosencu and Ali Saghafinia and Xian Du and Sohom Chakrabarty}, chapter = {4}, doi = {10.5772/intechopen.89711}, url = {https://doi.org/10.5772/intechopen.89711} }