BibTex format
@article{Davies:2020:10.3390/s20174879,
author = {Davies, HJ and Williams, I and Peters, NS and Mandic, DP},
doi = {10.3390/s20174879},
journal = {Sensors (Basel, Switzerland)},
title = {In-ear SpO2: a tool for wearable, unobtrusive monitoring of core blood oxygen saturation},
url = {http://dx.doi.org/10.3390/s20174879},
volume = {20},
year = {2020}
}