V. Tatiana, Pavlova. “THE RELATIONSHIP BETWEEN THE INTENSITY AND THE EFFECTIVENESS OF THE PRESCHOOL CHILDREN IN JOINT MENTAL ACTIVITY”. International Journal of Cognitive Research in Science, Engineering and Education (IJCRSEE) 2, no. 2 (December 20, 2014): 17–20. Accessed June 27, 2026. https://www.ijcrsee.com/index.php/ijcrsee/article/view/146.