1. Lubricant additives — a chemist's eye view;Ford;J. Inst. Pet.,1968
2. Oil soluble friction reducers—theory and application;Papay;Lub. Engg.,1983
3. Review of AW and EP working mechanisms of sulfur compounds and selected metallo-organic additives;Kajdas,1986
4. Antiwear and extreme pressure additives for lubricants;Forbes;Tribology,1970
5. Additives for gear oils — function and interaction;Damrath,1986