ICDAR 2009 Signature Verification Competition. - Vivian L. Blankers; C. Elisa van den Heuvel; Katrin Franke; Louis Vuurpijl (ICDAR, 2009)

Forensic Signature Verification Competition 4NSigComp2010 - Detection of Simulated and Disguised Signatures. - Marcus Liwicki; C. Elisa van den Heuvel; Bryan Found; Muhammad Imran Malik (ICFHR, 2010)

Signature Verification Competition for Online and Offline Skilled Forgeries (SigComp2011). - Marcus Liwicki; Muhammad Imran Malik; C. Elisa van den Heuvel; Xiaohong Chen 001; Charles E. H. Berger; Reinoud Stoel; Michael Blumenstein; Bryan Found (ICDAR, 2011)

Towards robust writer verification by correcting unnatural slant. - Axel Brink; Ralph Niels; Roeland A. van Batenburg; C. Elisa van den Heuvel; Lambert Schomaker (Pattern Recognit. Lett., 2011)

TriGraphSlant - benchmark set for writer identification - writers were asked to write in unnatural slant. - Axel Brink; Ralph Niels; Roeland A. van Batenburg; C. Elisa van den Heuvel; Lambert R. B. Schomaker (Zenodo, 2011)

ICFHR 2012 Competition on Automatic Forensic Signature Verification (4NsigComp 2012). - Marcus Liwicki; Muhammad Imran Malik; Linda Alewijnse; C. Elisa van den Heuvel; Bryan Found (ICFHR, 2012)