Hordienko-Mytrofanova, Iya, and Yana Kaznacheyeva. “The Psycholinguistic Characteristics of Grammar Manipulatives”. East European Journal of Psycholinguistics , vol. 1, no. 2, Dec. 2014, pp. 25-36, https://eejpl.vnu.edu.ua/index.php/eejpl/article/view/186.