@article{Grigoryev2022appearance,
author={Grigoryev, V.M. and Ermakova, L.V. and Khlystova, A.I.},
title={Appearance of active regions at the end of solar cycle 24 and at the beginning of cycle 25},
journal={Solnechno-Zemnaya Fizika},
publisher={INFRA-M Academic Publishing LLC.},
year={2022},
pages={29-37},
volume={8},
issue={4},
}