@article{Григорьев2020asymmetry,
author={Григорьев, В.М. and Ермакова, Л.В. and Хлыстова, А.И.},
title={Asymmetry in occurrence of the leading and following polarities in the photospheric magnetic field at the early stage of active region formation},
journal={Solar-Terrestrial Physics},
publisher={Институт солнечно-земной физики СО РАН},
year={2020},
pages={3-9},
volume={6},
issue={4},
}