Müller, Erwin W.; Bahadur, Kanwar (1956). "Field Ionization of gases at a metal surface and the resolution of the field ion microscope". Phys. Rev. 102 (3): 624–631. Bibcode:1956PhRv..102..624M. doi:10.1103/physrev.102.624.
Müller, Erwin W.; Bahadur, Kanwar (1956). "Field Ionization of gases at a metal surface and the resolution of the field ion microscope". Phys. Rev. 102 (3): 624–631. Bibcode:1956PhRv..102..624M. doi:10.1103/physrev.102.624.