International Meteor Organization (
IMO
)
Bibliographic Meteor Database -
Orionid Observations 1990
Hansen Torsten (1992):
Telescopic Orionids in the Night of October 22-23, 1990
WGN, Journal of the IMO
20
, 49-50
ORIONIDS TO 1990
Rainer Arlt
; last change: December 28, 1998