@incollection{Contreras13,
author = {Ana G. Gutiérrez-García and Carlos M. Contreras},
title = {Anxiety: An Adaptive Emotion},
booktitle = {New Insights into Anxiety Disorders},
publisher = {IntechOpen},
address = {Rijeka},
year = {2013},
editor = {Federico Durbano},
chapter = {2},
doi = {10.5772/53223},
url = {https://doi.org/10.5772/53223}
}