@Article{angeo-27-923-2009,
AUTHOR = {Christakis, N. and Haldoupis, C. and Zhou, Q. and Meek, C.},
TITLE = {Seasonal variability and descent of mid-latitude sporadic E layers at Arecibo},
JOURNAL = {Annales Geophysicae},
VOLUME = {27},
YEAR = {2009},
NUMBER = {3},
PAGES = {923--931},
URL = {https://angeo.copernicus.org/articles/27/923/2009/},
DOI = {10.5194/angeo-27-923-2009}
}