The Coster–Kronig transition is a special case of the Auger process in which the vacancy is filled by an electron from a higher subshell of the same shell. If, in addition, the electron emitted (the "Auger electron") also belongs to the same shell, one calls this a super Coster–Kronig transition.
- Coster, D.; R. De L. Kronig (1935). "New type of Auger effect and its influence on the x-ray spectrum". Physica. 2 (1–12): 13–24. Bibcode:1935Phy.....2...13C. doi:10.1016/S0031-8914(35)90060-X. ISSN 0031-8914.