(1)
Ronkainen, H.; Hokkanen, A.; Kapulainen, M.; Stuns, I.; Varjus, S.; Turunen, R.; Nyyssönen, S.; Halme, J. Multichannel Optical Sensor for Oil Film Pressure Measurement in Engine Main Bearing. Finnish J. Trib. 2012, 31, 20-26.