@Article{angeo-24-2743-2006,
AUTHOR = {Willis, D. M. and Henwood, R. and Stephenson, F. R.},
TITLE = {The presence of large sunspots near the central solar meridian at  the times of modern Japanese auroral observations},
JOURNAL = {Annales Geophysicae},
VOLUME = {24},
YEAR = {2006},
NUMBER = {10},
PAGES = {2743--2758},
URL = {https://angeo.copernicus.org/articles/24/2743/2006/},
DOI = {10.5194/angeo-24-2743-2006}
}