@techreport{ruppen:wp:metamodel,
 author = {Andreas Ruppen and Jacques Pasquier-Rocha},
 institution = {Department of Informatics, University of Fribourg, Switzerland},
 journal = {Internal Working Paper},
 number = {13-03},
 organization = {Unifr},
 pdf = {meta-model.pdf},
 title = {A Meta-Model for the Web of Things},
 year = {2013}
}