TWO ELECTRON, ONE PHOTON TRANSITION PROBABILITY IN Al FOLLOWLNG DOUBLE K-SHELL IONIZATION BY ELECTRON IMPACT A. KUMAR, J. AUERHAMMER, H. GENZ and A. RICHTER J. Phys. Colloques, 48 C9 (1987) C8-665-C8-668 DOI: 10.1051/jphyscol:19879115