Nikolov, M.,
Kangalov, P.,
Kerekov, S., &
Gospodinova, N.
().
Investigation of the tribological characteristics of complex ester of adipic acid as a friction modifier for engine oils on SMC-2 tribotester. // <I>Balkan<D> tribological association, 22, 2016, № 3A-II, p. 3412 - 3419..