@article{Mayer2021method,
author={Mayer, R.V.},
title={Method for Assessing the Complexity of Mathematical Reasoning in Educational Texts (on the Example of a Physics Textbook)},
journal={Standards and Monitoring in Education},
publisher={INFRA-M Academic Publishing LLC.},
year={2021},
pages={3-8},
volume={9},
issue={5},
}