Temperature Variations and N+/O+ in the Orion Nebula II. The Collision Strengths
Proceedings article published in 2001 by
R.~H Rubin,
R.~J Dufour,
P.~G Martin,
G.~J Ferland 
,
J.~A Baldwin,
C.~O Ortiz,
D.~K Walter
,
J.~A Baldwin,
C.~O Ortiz,
D.~K Walter
