Boldyreva, Galina N., Ludmila A. Zhavoronkova, Elena V. Sharova, and Irina S. Dobronravova. 2007. “Electroencephalographic Intercentral Interaction As a Reflection of Normal and Pathological Human Brain Activity”. The Spanish Journal of Psychology 10 (1): 167-77. https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0707120167A.