Sinha, K. P. 1929- Interactions in magnetically ordered solids / Krityunjai Prasad Sinha and Narendra Kumar. - Oxford : Oxford University Press, 1980. - xi, 180 p. ill. ; 24 cm. Includes index. Bibliography : p. 169 -173. ISBN: 0198514239 8.50 (36.50 U.S.) Subjects--Topical Terms: Solids--Magnetic properties.Electromagnetic interactions.Magnons.Phonons.