@inbook{Cowan+2023+327+357,
url = {https://doi.org/10.1525/9780520906150-013},
title = {CHAPTER 12. ENERGY LEVEL STRUCTURE (COMPLEX CONFIGURATIONS)},
booktitle = {The Theory of Atomic Structure and Spectra},
author = {Robert D. Cowan},
publisher = {University of California Press},
address = {Berkeley},
pages = {327--357},
doi = {doi:10.1525/9780520906150-013},
isbn = {9780520906150},
year = {2023},
lastchecked = {2026-05-08}
}