[1] M.D. Johnson, S. Korcek, M. Zinbo, Industrial & engineering chemistry research, 26, 1987, 1754-1757.
[2] S.K. Naidu, E.E. Klaus, J.L. Duda, Industrial & engineering chemistry product research and development, 23, 1984, 613-619.
[3] F. Egharevba, A.U. Maduako, Industrial & engineering chemistry research, 41, 2002, 3473-3481.
[4] E. Abner Jr, Lubricant deterioration in service, CRC Handbook of Lubrication, Citeseer, 1983, pp. 517-532.
[5] G. Offunne, A. Maduako, C. Ojinnaka, Tribology International, 22, 1989, 401-404.
[6] G. Ofunne, A. Maduako, C. Ojinnaka, Tribology International, 23, 1990, 407-412.
[7] E. Klaus, L. Cho, H. Dang, SAE Technical Paper, 1980.
[8] F.J. Carrion, G. Martinez-Nicolas, P. Iglesias, J. Sanes, M.D. Bermudez, Int J Mol Sci, 10, 2009, 4102-4115.
[9] M.D. Bermúdez, W. Brostow, F.J. Carrión-Vilches, J.J. Cervantes, D. Pietkiewicz, Polymer, 46, 2005, 347-362.
[10] T. Hirose, H. Takai, M. Watabe, H. Minamikawa, T. Tachikawa, K. Kodama, M. Yasutake, Tetrahedron, 70, 2014, 5100-5108.
[11] R.I. Nessim, M.M. Naoum, S.Z. Mohamed, M.I. Nessim, Liquid Crystals, 31, 2004, 649-654.
[12] G. Biresaw, D. Zadnik, Tribology and the Liquid-Crystalline State, 1989, 83-90.
[13] M.-D. Bermúdez, G. Martínez-Nicolás, F.-J. Carrión-Vilches, Wear, 212, 1997, 188-194.
[14] S. Mori, H. Iwata, Tribology international, 29, 1996, 35-39.
[15] Y. Kimura, K. Nakano, T. Kato, S. Morishita, Wear, 175, 1994, 143-149.
[16] M. Shen, J. Luo, S. Wen, J. Yao, Tribology & Lubrication Technology, 58, 2002, 18.
[17] K. Nakano, Tribology Letters, 14, 2003, 17-24.
[18] P. Iglesias, M. Bermudez, F. Carrion, G. Martınez-Nicolás, Wear, 256, 2004, 386-392.
[19] M.M. Naoum, G.R. Saad, R.I. Nessim, T.A. Abdel-Aziz, H. Seliger, Liquid crystals, 23, 1997, 789-795.
[20] M.I. Nessim, A.A. Bassoussi, D.I. Osman, H.F.Khalil, A.M.Ashmawy, International Journal of Current Research, 6, 2014, 9203-9216.
[21] S.Z. Mohammady, R.I. Nessim, O.R. Shehab, M.M. Naoum, Liquid Crystals, 32, 2005, 477-482.
[22] H. Omrani, A.E. Dudelzak, B.P. Hollebone, H.-P. Loock, Analytica chimica acta, 811, 2014, 1-12.
[23] M. Rashed, M. Kalam, H. Masjuki, H. Rashedul, A. Ashraful, I. Shancita, A. Ruhul, RSC Advances, 5, 2015, 36240-36261.