@book{9ca9b9cf46184e5b9f1e8a877761fc2a,
title = "Quantum mechanical operator equivalents used in the theory of magnetism",
abstract = "Two sets of operator equivalents, the Kacah operators and the Stevens operators are treated. Their definitions as angular momentum operators, the transformation properties under rotations, the approximate Bose operator expansions, and the mutual connection of the two sets of operators are treated in detail. The information is presented in a number of detailed tables to enable direct use in hand calculations. ",
keywords = "Ris{\o}-R-259, Ris{\o}-259, Ris{\o} report 259",
author = "O. Danielsen and Per-Anker Lindg{\aa}rd",
year = "1972",
language = "English",
isbn = "8755001351",
series = "Denmark. Forskningscenter Risoe. Risoe-R",
number = "259",
publisher = "Ris{\o} National Laboratory",
}