@INPROCEEDINGS {31960,
author={D. Duarte and R.N.  Nogueira and L. Bilro},
doi={ISBN: 978-989-97345-2-4},
booktitle={International Conference on Plastic Optical Fibres - POF},
title={Portable, in-line and low cost refractive index sensor for liquids},
year={2017},
month={September},
volume={},
pages={pp88 -1-pp88 -5} 
}