@proceedings {714, title = {Proton-enhance NMR of dilute spins in solids, proceedings of the congress ampere}, journal = {The Congress Ampere}, year = {1972}, pages = {11-17}, publisher = {North Holland Publishers}, address = {Turku, Finland}, author = {Waugh, J.S. and Gibby, M.G. and Kaplan, S. and Pines, A.} }