Não informado. (2009). Tribology & Lubrication Technology. Society of Tribologists and Lubrication Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Tribology & Lubrication Technology. Park Ridge, Ill: Society of Tribologists and Lubrication Engineers, 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Tribology & Lubrication Technology. Society of Tribologists and Lubrication Engineers, 2009.
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