Steffen Lamparter Anupriya Ankolekar Daniel Oberle Rudi Studer Christof Weinhardt Semantic specification and evaluation of bids in web-based markets. 313-329 2008 7 Electronic Commerce Research and Applications 3 http://dx.doi.org/10.1016/j.elerap.2008.03.003 db/journals/ecra/ecra7.html#LamparterAOSW08