DP - MPI Library TY - BOOK PB - Springer PY - 2011 CY - Berlin u.a. AU - Fensel, Dieter AU - Studer, Rudi SN - 978-3-642-19796-3 SN - 978-3-642-19797-0 SN - 3642197965 SN - 3642197973 T1 - Foundations for the web of information and services : a review of 20 years of Semantic Web research ; [in honor of Professor Rudi Studer] ER -