ALTID, eine Sprache für Lehr- und Informationsdialoge. - R. Hansen; E.-G. Hoffmann; F. Simon (GI Jahrestagung, 1975)

Portable Implementierung von ALTID. - R. Hansen; E.-G. Hoffmann (Portable Software, 1980)

Strategic Issues in European Hypertext Research and Development (Panel). - Flavio Argentesi; Norbert A. Streitz; R. Hansen; G. Degli Antoni; A. Cicu (ECHT, 1990)

On the MendÈs France Fractal Dimension of Strange attractors: the HÉnon Case. - M. Piacquadio Losada; R. Hansen; F. Ponta (Int. J. Bifurc. Chaos, 2002)

DICOM plug-n-play, factory calibration internal to the flat panel. - K. Compton; R. Hansen (CARS, 2004)

Fractal Parameters for the Study of HÉnon-like attractors. - R. Hansen; M. Piacquadio Losada (Int. J. Bifurc. Chaos, 2005)

The K(m, n) equation with generalized evolution term studied by symmetry reductions and qualitative analysis. - María S. Bruzón; Maria Luz Gandarias; Graciela Adriana González; R. Hansen (Appl. Math. Comput., 2012)