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, nº 1:: 167-77. https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0707120167A