@incollection{Kayal21,
author = {Abraham Kayal},
title = {The Physiology of Tear Film},
booktitle = {Dry Eye Syndrome},
publisher = {IntechOpen},
address = {Rijeka},
year = {2021},
editor = {Felicia M. Ferreri},
chapter = {2},
doi = {10.5772/intechopen.98945},
url = {https://doi.org/10.5772/intechopen.98945}
}