@article{Efimova2014cluster,
author={Efimova, G.. and Miroshnikov  , V.. and Korolkova, T..},
title={Cluster analysis of the effectiveness of the quality management system.},
journal={Bulletin of Bryansk state technical university},
publisher={Bryansk State Technical University},
year={2014},
pages={164-170},
volume={2014},
issue={4},
}