E. Clementi; D.L.Raimondi; W.P. Reinhardt (1967). "Atomic Screening Constants from SCF Functions. II. Atoms with 37 to 86 Electrons". The Journal of Chemical Physics. 47 (4): 1300-1307. Bibcode:1967JChPh..47.1300C. doi:10.1063/1.1712084.
E. Clementi; D.L.Raimondi; W.P. Reinhardt (1967). "Atomic Screening Constants from SCF Functions. II. Atoms with 37 to 86 Electrons". The Journal of Chemical Physics. 47 (4): 1300-1307. Bibcode:1967JChPh..47.1300C. doi:10.1063/1.1712084.
Brown, Kevin (2007). "The Hydrogen Atom". MathPages. Arkiveret fra originalen den 20. november 2022. Hentet 11. november 2022.{{cite web}}: CS1-vedligeholdelse: BOT: original-url status ukendt (link)