Reference Label	Details
Derrick 1971	P. J. Derrick, L. Asbrink, O. Edqvist, B.-O. Jonsson, and E. Lindholm, Int. J. Mass Spectrom. Ion Phys. 6, 161-175 (1971) Rydberg Series in Small Molecules. X. Photoelectron Spectroscopy and Electronic Structure of Furan