PaperGeneration of time-reversed optical wave fronts by backward-wave photon echoesN.S. ShirenApplied Physics Letters
PaperMultiple-Quantum Phase Conjugation in Microwave AcousticsN.S. Shiren, R.L. Melcher, et al.IEEE JQE
PaperPolarization echoes and long-time storage in piezoelectric powdersR.L. Melcher, N.S. ShirenPhysical Review Letters