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Cohen, James S. (1976). “Multistate curve-crossing model for scattering: Associative ionization and excitation transfer in helium”. Physical Review A13 (1): 99–114. Bibcode: 1976PhRvA..13...99C. doi:10.1103/PhysRevA.13.99.
Yoshihiro, Y.; Hideyasu, T.; Ryo, M.; Hideo, Y.; Fuminori, M.; Koichi, O. (200). “A highly sensitive electron spectrometer for crossed-beam collisional ionization: A retarding-type magnetic bottle analyzer and its application to collision-energy resolved Penning ionization electron spectroscopy”. Review of Scientific Instruments71 (3): 3042–49. Bibcode: 2000RScI...71.3042Y. doi:10.1063/1.1305819.
Harada, Yoshiya; Ozaki, Hiroyuki (1987). “Penning Ionization Electron Spectoscopy: Its Application to Surface Characterization of Organic Solids”. Jpn. J. Appl. Phys.26 (8): 1201–1214. Bibcode: 1987JaJAP..26.1201H. doi:10.1143/JJAP.26.1201.
King, F. L.; Teng, J.; Steiner, R. E. (1995). “Special feature: Tutorial. Glow discharge mass spectrometry: Trace element determinations in solid samples”. Journal of Mass Spectrometry30 (8): 1060–1075. Bibcode: 1995JMSp...30.1061K. doi:10.1002/jms.1190300802.