Lyashenko, B.N., and S.S. Zhukovskiy. 2009. “nternet-ortal f rganizational-ethodical roviding istancionnikh lympiads n rogramirovaniyu”. ournal of nformation echnologies in ducation (ITE), no. 4 (December):134-38. https://doi.org/10.14308/ite000099.