@article{article, title = {{Detection of lubrication state in a field operational wind turbine gearbox bearing using ultrasonic reflectometry}}, publisher = {{MDPI AG}}, url = {{}}, year = {{2021}}, month = {{1}}, author = {{Nicholas G and Clarke BP and Dwyer-Joyce RS}}, doi = {{10.3390/lubricants9010006}}, volume = {{9}}, journal = {{Lubricants}}, issue = {{1}}, note = {{Accessed on 2025/05/31}}}