Towards a benchmark for traceability. - Eya Ben Charrada; David Caspar; Cédric Jeanneret; Martin Glinz (EVOL/IWPSE, 2011)

Spatial Querying of Geographical Data with Pen-Input Scopes. - Fabrice Matulic; David Caspar; Moira C. Norrie (ITS, 2014)