Sahaydak, H. D., N. B. Filimonova, and I. H. Zyma. “Electrical Activity of the Human Brain During Testing Mathematical Intelligence for Subtest ‘arithmetic Operations’ of Amthauer Test”. Cherkasy University Bulletin: Biological Sciences Series, vol. 352, no. 19, Jan. 2016, https://bio-ejournal.cdu.edu.ua/article/view/132.