Verifying the UNIPEN devset. - Louis Vuurpijl; Ralph Niels; Merijn van Erp; Lambert Schomaker; Eugene Ratzlaff (IWFHR, 2004)

Dynamic TimeWarping Applied to Tamil Character Recognitio. - Ralph Niels; Louis Vuurpijl (ICDAR, 2005)

Generating Copybooks from Consistent Handwriting Styles. - Ralph Niels; Louis Vuurpijl (ICDAR, 2007)

Automatic Allograph Matching in Forensic Writer Identification. - Ralph Niels; Louis Vuurpijl; Lambert Schomaker (Int. J. Pattern Recognit. Artif. Intell., 2007)

Iconic and multi-stroke gesture recognition. - Don Willems; Ralph Niels; Marcel van Gerven; Louis Vuurpijl (Pattern Recognit., 2009)

Design Issues for Pen-Centric Interactive Maps. - Louis Vuurpijl; Don Willems; Ralph Niels; Marcel van Gerven (Interactive Collaborative Information Systems, 2010)

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)

Design patterns for mixed-method research in HCI. - Koen van Turnhout; Arthur Bennis; Sabine Craenmehr; Robert Holwerda; Marjolein Jacobs; Ralph Niels; Lambert Zaad; Stijn Hoppenbrouwers; Dick Lenior; René Bakker (NordiCHI, 2014)

Flipped classroom patterns: designing valuable in-class meetings. - Christian Köppe; Ralph Niels; Robert Holwerda; Lars Tijsma; Niek Van Diepen; Koen van Turnhout; René Bakker (EuroPLoP, 2015)

Flipped Classroom Patterns: Controlling the Pace. - Christian Köppe; Ralph Niels; René Bakker; Stijn Hoppenbrouwers (VikingPLoP, 2016)