1. Egerton , R.F. 1978 Scanning Electron Microscopy-1978 O. Johari 133
2. Photon Mass Attenuation and Mass Energy-Absorption Coefficients for H, C, N, O, Ar, and Seven Mixtures from 0.1 keV to 20 MeV
3. Joy , D.C. Maher , D.M. 1980 Scanning Electron Microscopy-1980 O. Johari 25
4. Kihn , Y. Perez , J.Ph. Sevely , J. Zanchi , G. Jouffrey , B. 1980 Electron Microscopy 1980 42