@incollection{Liu08,
author = {Zhen Liu},
title = {Computational Emotion Model for Virtual Characters},
booktitle = {Affective Computing},
publisher = {IntechOpen},
address = {Rijeka},
year = {2008},
editor = {Jimmy Or},
chapter = {12},
doi = {10.5772/6177},
url = {https://doi.org/10.5772/6177}
}