@article{Рыбак2016some,
author={Рыбак, А.Л.},
title={Some peculiarities in longitude distribution of sunspot groups over last four eleven-year solar cycles},
journal={Solar-Terrestrial Physics},
publisher={Институт солнечно-земной физики СО РАН},
year={2016},
pages={28-36},
volume={2},
issue={2},
}