Korenkov, V., and A. Uzhinskiy. “A Monitoring System of File Transfer Service (FTS) in the EGEE/WLCG Project”. Numerical Methods and Programming (Vychislitel’nye Metody I Programmirovanie), vol. 10, no. 20, Apr. 2009, pp. 96-106, https://en.num-meth.ru/index.php/journal/article/view/364.