Overview -- Motivation for a theoretical foundation for collaborative networks -- Related work on reference modeling for collaborative networks -- Towards a CN reference model -- Overview -- Reference modeling: Needs and basic terminology -- Collaboration forms -- The ARCON modeling framework -- ARCON reference models for collaborative networks -- A comprehensive semantic indexing schema for ARCON -- Further steps on CN reference modeling -- Modeling Tools And Approaches -- Overview -- A survey of modeling methods and tools -- A survey of soft modeling approaches for collaborative networks -- Modeling examples -- Overview -- A multi-model approach to analyze inter-organizational trust in VBEs -- Networked partner selection with robust portfolio modeling -- Modeling collaboration preparedness assessment -- A benefit analysis model for collaborative networks -- An approach in value systems modeling -- Selection of a virtual organization coordinator -- Modeling the value of expectations in collaborative networked organizations -- Prospective performance measurement in virtual organizations -- Erratum.