Berestova, A. V., S. V. Kolosov, M. I. Tsvetkova, and E. V. Grib. “Improvement of student’s Motivation to Research Activities in the Process of Studying”. Opción, Vol. 36, 1, pp. 1784-00, http://www.produccioncientificaluz.org/index.php/opcion/article/view/32516.