1978 mufon symposium
Mufon ufo journal 1979 7. july
Mufon ufo journal 1977 9. september
Mufon ufo journal 1979 8. august
Mufon ufo journal 1978 5. may
Mufon ufo journal 1978 7. july
Mufon ufo journal 1977 11. november
Mufon ufo journal 1977 10. october
Mufon ufo journal 1978 11.-12. november december
MUFON UFO Journal - 1996 9. September
MUFON UFO Journal - 1984 11. November
MUFON UFO Journal - 1981 9. September
