APA (7th ed.) Citation

Wuilleumier, F. J. (2000). From Doubly Excited States of Helium to Triply Excited States of Lithium. Physics essays, 13(2), 230-247. https://doi.org/10.4006/1.3028816

Chicago Style (17th ed.) Citation

Wuilleumier, François J. "From Doubly Excited States of Helium to Triply Excited States of Lithium." Physics Essays 13, no. 2 (2000): 230-247. https://doi.org/10.4006/1.3028816.

MLA (9th ed.) Citation

Wuilleumier, François J. "From Doubly Excited States of Helium to Triply Excited States of Lithium." Physics Essays, vol. 13, no. 2, 2000, pp. 230-247, https://doi.org/10.4006/1.3028816.