1. The SEEK (Sporadic-E Experiment over Kyushu) campaign;Fukao;Geophys. Res. Lett.,1998
2. The SEEK chemical release experiment: Observed neutral wind profile in a region of sporadic E;Larsen;Geophys. Res. Lett.,1998
3. The GEOS electron beam experiment;Melzner;Space Sci. Instrum.,1978
4. Electric field measurement in the ionosphere using the time-of-flight technique;Nakamura;J. Geophys. Res.,1989
5. Electric field measurements above and within a sporadic-E layer;Pfaff;Geophys. Res. Lett.,1998