@article{Voinova2016methodological,
author={Voinova, I.V. and Safonova, L.A.},
title={Methodological Aspects of the Development of Test Tasks As a Means of Mathematical Concepts Formation},
journal={Profession-Oriented School},
publisher={INFRA-M Academic Publishing LLC.},
year={2016},
pages={56-63},
volume={4},
issue={4},
}