The state multipoles of the n=2 state of atomic hydrogen
(1988)
Journal Article
Williams, J., & Heck, E. (1988). The state multipoles of the n=2 state of atomic hydrogen. Journal of Physics B: Atomic, Molecular and Optical Physics, 21, 1627-1638. https://doi.org/10.1088/0953-4075/21/9/020