@article{Popov2013alternative,
author={Popov, G.. and Popova, E..},
title={ALTERNATIVE OF COEFFICIENT OF CONCORDANCE},
journal={Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics},
publisher={Astrakhan State Technical University},
year={2013},
pages={158-167},
volume={2013},
issue={2},
}