1. Rocket 210km 56' UP 800R Gentieu etal., 1979. Sakllite 250km 22-28' down -1000R IIufiman et al.,1980.
2. liorket. 250km 56" side -8OOR hfeier et al., 1980.
3. Rocket 220km 56' side llOOR Geritieu etal., 1981.
4. Satellite 600km -0- UP 220R Chakrabarti etal., 1983. Satrllite 600km -0" down 1500R ibid