HYPER-FINE STRUCTURE IN SPECTRAL LINES— ESPECIALLY THOSE OF SINGLY IONIZED PRASEODYMIUM
- 15 August 1929
- journal article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 15 (8), 642-646
- https://doi.org/10.1073/pnas.15.8.642