Detecting fingerprint alterations by orientation field and minutiae orientation analysis. - John Ellingsgaard; Ctirad Sousedik; Christoph Busch 001 (IWBF, 2014)

Altered fingerprint detection - algorithm performance evaluation. - Rudolf Haraksim; Alexandre Anthonioz; Christophe Champod; Martin Aastrup Olsen; John Ellingsgaard; Christoph Busch 001 (IWBF, 2016)

Altered Fingerprint Detection. - John Ellingsgaard; Christoph Busch 001 (Handbook of Biometrics for Forensic Science, 2017)