SkrypnikW. I. (2019) “On the post-Darwin approximation of the Maxwell – Lorentz equations of motion of point charges in the absence of neutrality”, Ukrains’kyi Matematychnyi Zhurnal, 71(1), pp. 117-128. Available at: http://umj.imath.kiev.ua/index.php/umj/article/view/1423 (Accessed: 2December2020).