TY - JOUR AU - Fox, Richard AU - Diddams, Scott AU - Bartels, A AU - Hollberg, Leo C2 - Applied Optics DA - 2005-01-01 LA - en M1 - 44 PB - Applied Optics PY - 2005 TI - Optical frequency measurements with the global positioning system: tests with iodine-stabilized HeNe-laser ER -