@inbook{786271, author = {W Unertl and Robert Celotta and Daniel Pierce}, title = {Polarized LEED Using a GaAs Spin Polarized Electron Source}, year = {1978}, month = {1978-01-01 00:01:00}, publisher = {Electron Diffraction 1927-1977, Institute of Physics, Philadephia, PA}, language = {en}, }