Melnyk, A. O., I. D. Yakovlieva, and V. Y. Yushchenko. “Construction and Matrix Presentation of Algorithm Flow Graph”. Visnyk of Vinnytsia Politechnical Institute, no. 3, Nov. 2010, pp. 93-99, https://visnyk.vntu.edu.ua/index.php/visnyk/article/view/757.