Kuznetsov, Juriy Nikolayevitch, et al. “Computer Modeling And Study Of Force Characteristics Of Eccentric Drill Chuck”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 9, no. 1, Dec. 2013, pp. 100-5, https://gssrr.org/JournalOfBasicAndApplied/article/view/1263.