Semamo: An Approach to Semantic Market Monitoring. - Norbert Walchhofer; Karl Anton Fröschl; Birgit Dippelreiter; Michael Pöttler; Hannes Werthner (J. Inf. Technol. Tour., 2009)

Semantic Online Tourism Market Monitoring. - Norbert Walchhofer; Milan Hronsky; Michael Pöttler; Robert Baumgartner; Karl Anton Froeschl (ENTER, 2010)

The Online Market Observatory: A Domain Model Approach. - Karl Anton Froeschl; Norbert Walchhofer; Milan Hronsky (Int. J. Softw. Informatics, 2010)

Adaptive Change Estimation in the Context of Online Market Monitoring. - Norbert Walchhofer; Karl Anton Froeschl; Kurt Hornik (EUROCAST (1), 2011)