%0 Journal Article %J Physical Review Letters %D 1973 %T Optically Detected Electron-Spin Echoes and Free Precession in Molecular Excited-States %A Breiland, W. G. %A Harris, C. B. %A Pines, A. %B Physical Review Letters %V 30 %P 158-161 %@ 0031-9007 %G English %U ://WOS:A1973O554400002 %N 5 %M WOS:A1973O554400002 %! Optically Detected Electron-Spin Echoes and Free Precession in Molecular Excited-States %R Doi 10.1103/Physrevlett.30.158