Довбня, Н.П., Л.Н. Бондаренко, and Д. В. Бобырь. 2014. “Dependence of Resistance to Motion of Diesel Engine on Inflexibility of Springs”. Problems of Tribology 60 (2), 66-67. http://tribology.khnu.km.ua/index.php/ProbTrib/article/view/332.