@inbook {680, title = {Theory of double-quantum coherence and high resolution deuterium NMR in solids}, booktitle = {Magnetic resonance and related phenomena}, year = {1977}, pages = {395-400}, publisher = {Beltz-Offsetdruck}, organization = {Beltz-Offsetdruck}, address = {Heidelburg}, author = {Vega, S. and Pines, A.}, editor = {Hausser, K.} }