@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 2024/12/27}}}