Mokin, O. B., and B. I. Mokin. “Influence of Outer Rail Rising of Railway Curve on Critical Speed at Which Trains Can Still Pass Curve Without Leaving the Track”. Visnyk of Vinnytsia Politechnical Institute, no. 3, Nov. 2010, pp. 158-63, https://visnyk.vntu.edu.ua/index.php/visnyk/article/view/1260.