@Article{angeo-20-1225-2002,
AUTHOR = {Tsagouri, I. and Belehaki, A.},
TITLE = {On the nature of nighttime ionisation enhancements observed with the Athens Digisonde},
JOURNAL = {Annales Geophysicae},
VOLUME = {20},
YEAR = {2002},
NUMBER = {8},
PAGES = {1225--1238},
URL = {https://angeo.copernicus.org/articles/20/1225/2002/},
DOI = {10.5194/angeo-20-1225-2002}
}