Free Groups and Regular Expressions - Peter Johansen (STOC, 1969)

Free Groups in Lindenmayer Systems. - Peter Johansen; Erik Meiling (L Systems, 1974)

Commutator Calculus and L Systems. - Peter Johansen (Automata, Languages, Development, 1975)

The Generating Function of the Number of Subpatterns of a D0L Sequence. - Peter Johansen (Theor. Comput. Sci., 1979)

A method for detecting structure in polyhedra. - Peter Johansen; Neil D. Jones; Jens Clausen (Pattern Recognit. Lett., 1984)

Inductive Inference of Ultimately Periodic Sequences. - Peter Johansen (BIT, 1988)

On the classification of toppoints in scale space. - Peter Johansen (J. Math. Imaging Vis., 1994)

On-line String Matching with Feedback. - Peter Johansen (Theor. Comput. Sci., 1995)

Adaptive Pattern Recognition. - Peter Johansen (J. Math. Imaging Vis., 1997)

Local Analysis of Image Scale Space. - Peter Johansen (Gaussian Scale-Space Theory, 1997)

Branch Points in One-Dimensional Gaussian Scale Space. - Peter Johansen; Mads Nielsen; Ole Fogh Olsen (J. Math. Imaging Vis., 2000)

Guest Editors' Introduction. - Peter Johansen; Bjarne K. Ersbøll (Int. J. Comput. Vis., 2001)

Brownian Warps: A Least Committed Prior for Non-rigid Registration. - Mads Nielsen; Peter Johansen; Andrew D. Jackson; Benny Lautrup (MICCAI (2), 2002)

Guest Editorial: Special Issue on Statistics of Shapes and Textures. - Mads Nielsen; Lars Kai Hansen; Peter Johansen; Jon Sporring (J. Math. Imaging Vis., 2002)

A PDE Solution of Brownian Warping. - Mads Nielsen; Peter Johansen (ECCV (4), 2004)

Transitions of Multi-scale Singularity Trees. - Kerawit Somchaipeng; Jon Sporring; Sven Kreiborg; Peter Johansen (DSSCV, 2005)

Multi-scale Singularity Trees: Soft-Linked Scale-Space Hierarchies. - Kerawit Somchaipeng; Jon Sporring; Sven Kreiborg; Peter Johansen (Scale-Space, 2005)

Multi-object tracking of human spermatozoa. - Lauge Sørensen; Jakob Østergaard; Peter Johansen; Marleen de Bruijne (Image Processing, 2008)

Brownian Warps for Non-Rigid Registration. - Mads Nielsen; Peter Johansen; Andrew D. Jackson; Benny Lautrup; Søren Hauberg (J. Math. Imaging Vis., 2008)

Teaching Image Analysis at DIKU. - Peter Johansen (History of Nordic Computing, 2010)

What Genes Tell about Iris Appearance. - Stine Harder; Susanne R. Christoffersen; Peter Johansen; Claus Børsting; Niels Morling; Jeppe D. Andersen; Anders L. Dahl; Rasmus R. Paulsen (MCV, 2012)

Electrode placement in bioimpedance spectroscopy. - Marie Birkemose; Asger Juul Møller; Mads Laensø Madsen; Steven Brantlov; Henrik Sørensen; Kristian Overgaard; Peter Johansen (EMBC, 2013)

Correlation of iris biometrics and DNA. - Stine Harder; Line Harder Clemmensen; Anders L. Dahl; Jeppe D. Andersen; Peter Johansen; Susanne R. Christoffersen; Niels Morling; Claus Børsting; Rasmus R. Paulsen (IWBF, 2013)

Using Lorenz plot and Cardiac Sympathetic Index of heart rate variability for detecting seizures for patients with epilepsy. - Jesper Jeppesen; Sándor Beniczky; Peter Johansen; Per Sidenius; Anders Fuglsang-Frederiksen (EMBC, 2014)

Mechanical heart valve cavitation in patients with bileaflet valves. - Peter Johansen; Tina S. Andersen; J. Michael Hasenkam; Hans Nygaard; Peter K. Paulsen (EMBC, 2014)

The effect of the aortic valve orientation on cavitation. - Peter Johansen; Brandon R. Travis; Morten Smerup; Thomas Decker Christensen; Jonas Funder; Camilla Nyboe; Hans Nygaard; J. Michael Hasenkam (EMBC, 2016)

Modified automatic R-peak detection algorithm for patients with epilepsy using a portable electrocardiogram recorder. - Jesper Jeppesen; Sándor Beniczky; Anders Fuglsang-Frederiksen; Per Sidenius; Peter Johansen (EMBC, 2017)

Idealized aortic annuloplasty FSI digital twin of 3D-printed phantoms with 4D-flow MRI comparison. - Luca Bontempi; Marta Zattoni; Anna Ramella; Francesco Migliavacca; Steffen Ringgaard; Won Yong Kim; Peter Johansen; Monika Colombo (Comput. Biol. Medicine, 2025)