@Article{angeo-23-3591-2005,
AUTHOR = {Butcher, N.},
TITLE = {Daily ionospheric forecasting service (DIFS) III},
JOURNAL = {Annales Geophysicae},
VOLUME = {23},
YEAR = {2005},
NUMBER = {12},
PAGES = {3591--3598},
URL = {http://www.ann-geophys.net/23/3591/2005/},
DOI = {10.5194/angeo-23-3591-2005}
}