Extinction Corrections and the Decrement of the He I lines in the Orion Nebula
Proceedings article published in 1996 by
P.~G Martin,
R.~H Rubin,
G.~J Ferland 
,
R.~J Dufour,
C.~R O'dell,
J.~A Baldwin,
J.~J Hester,
D.~K Walter
,
R.~J Dufour,
C.~R O'dell,
J.~A Baldwin,
J.~J Hester,
D.~K Walter
