@ARTICLE {29562,
author={D. Duarte and R.N.  Nogueira and L. Bilro},
doi={10.1088/1361-6501/ab46ff},
journal={Measurement Science and Technology},
title={A low-cost liquid refractive index sensor based on plastic optical fibre and CCD array},
year={2020},
month={January},
volume={31},
number={4},
pages={047001-047001},
ISSN={0957-0233}
}