1. Lebeck A O. A study of mixed lubrication in contacting mechanical face seals. In: Present at the 4th Leeds-Lyon Symposium on Lubrication, Lyon, 1977. 46–57
2. Lebeck A O. A mixed friction hydrostatic mechanical face seal model with thermal rotation and wear. ASLE Trans, 1979, 23 (4): 375–387
3. Lebeck A O. A mixed friction hydrostatic face seal model with phase change. ASME J Lubr Tech, 1980, 102: 133–138
4. Ruan B, Salant R F, Green I. A mixed lubrication model of liquid/gas mechanical face seals. Tribol Trans, 1997, 40 (4): 647–657
5. Ruan B. A Mixed Lubrication Model of Liquid/Gas Mechanical Face Seals. Dissertation for the Doctoral Degree. Atlanta, GA: Georgia Institute of Technology, USA, 1995