1978 mufon symposium
MUFON UFO Journal - 1996 9. September
MUFON UFO Journal - 2000 1. January
MUFON UFO Journal - 2002 6. June
MUFON UFO Journal - 1997 11. November
MUFON UFO Journal - 2007 9. September
MUFON UFO Journal - 1998 9. September
MUFON UFO Journal - 1999 12. December
MUFON UFO Journal - 2000 10. October
MUFON UFO Journal - 2000 11. November
MUFON UFO Journal - 1997 5. May
MUFON UFO Journal - 1996 8. August
