Sapielkin, V. (2019). Using the method of principal components in study of the data obtained by means of X-ray fluorescent spectral analysis on the elemental composition of clothing damages areas at the shooting of nonlethal elastic bullets "Teren-12P" ammunition. Journal of Education, Health and Sport, 9(1), 326–334. Retrieved from https://apcz.umk.pl/JEHS/article/view/6561