Reference Label	Details
Clauberg 1991	H. Clauberg and P. Chen, J. Am. Chem. Soc. 113, 1445-1446 (1991) Photoelectron Spectrum of Cyclopropenylidene and Weak Bonds in Cyclopropenyl Radical
Clauberg 1992	H. Clauberg, D. W. Minsek and P. Chen, J. Am. Chem. Soc. 114, 99-107 (1992) Mass and Photoelectron Spectroscopy of C3H2. DeltaHf of Singlet Carbenes Deviate from Additivity by their Singlet-Triplet Gaps
Clauberg 1992a	H. Clauberg and P. Chen, J. Phys. Chem. 96, 5676-5678 (1992) Geometry of c-C3H2+. Franck-Condon Factors in Photoionization are a Sensitive Probe of Polyatomic Ion Structure