A Theoretical I nvestigation of the Emerging Standards for Web Services Karthikeyan Umapathy and Sandeep Purao College of Information Sciences and Technology, Penn State University University Park, PA 16802 {kumapathy, spurao}@ist.psu.edu Keywords: Service-Oriented Computing, Web Services, Web Services Standards, W3C web services, Semantic Web Services, ebXML, Standards Stacks, Layered Models, Language-Action Perspective, Reference Framework © 2006. K. Umapathy, S. Purao. You can find the original print version in below link DOI: http://www.springerlink.com/content/r282201465372g67/