@Article{hgss-5-175-2014,
AUTHOR = {Carlson, P. and Watson, A. A.},
TITLE = {Erich Regener and the ionisation maximum of the atmosphere},
JOURNAL = {History of Geo- and Space Sciences},
VOLUME = {5},
YEAR = {2014},
NUMBER = {2},
PAGES = {175--182},
URL = {https://hgss.copernicus.org/articles/5/175/2014/},
DOI = {10.5194/hgss-5-175-2014}
}