Henry Norris Russell
Henry Norris Russell ForMemRS HFRSE FRAS (October 25, 1877 – February 18, 1957) was an American astronomer who, along with Ejnar Hertzsprung, developed the Hertzsprung–Russell diagram (1910). In 1923, working with Frederick Saunders, he developed Russell–Saunders coupling, which is also known as LS coupling. Provided by Wikipedia
1
Published: 1911
Superior document: Publication / Carnegie Institution of Washington 147
2
Published: 1944
Superior document: Transactions of the American Philosophical Society N.S.,34,2