@article{article, title  = {{Ultrasound for the non-invasive measurement of internal combustion engine piston ring oil films}},

 publisher = {{SAGE Publications}},

 url = {{https://doi.org/10.1177/1350650114552538 }},

 year = {{2015}},

 month = {{2}},

 author = {{Mills R and Vail JR and Dwyer-Joyce R}},

 doi = {{10.1177/1350650114552538}},

 volume = {{229}},

 journal = {{Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology}},

 issue = {{2}},

 pages = {{207-215}},

 note = {{Accessed on 2025/11/09}}}