@article {713,
	title = {Spin Echoes and Loschmidt{\textquoteright}s paradox},
	journal = {Journal Pure Applied Chemistry},
	volume = {32},
	year = {1972},
	pages = {317-324},
	author = {Waugh, J.S. and Rhim, W.-K. and Pines, A.}
}
@article {728,
	title = {Spectrometers for multiple pulse NMR},
	journal = {Advances in Magnetic Resonance},
	volume = {5},
	year = {1971},
	pages = {117-175},
	author = {Ellett, J.D., Jr. and Gibby, M.G. and Haeberlen, U. and Huber, L.M. and Mehring, M. and Pines, A. and Waugh, J.S.}
}
