COUPLED ELECTRON-LO PHONON EXCITATION IN A TWO DIMENSIONAL ELECTRON SYSTEM G. Fishmat, A. Pinczuk, J.M. Worlock, H.L. Störmer, A.C. Gossard et W. Wiegmann J. Phys. Colloques, 42 C6 (1981) C6-305-C6-307 DOI: 10.1051/jphyscol:1981688