1. Asparouhov, Tihomir, und Bengt O. Muthén. 2007. Computationally efficient estimation of multilevel highdimensional latent variable models. In Proceedings of the joint statistical meeting, August 2007, Salt Lake City.
2. Beretvas, Natasha S. 2011. Cross-classified and multiple-membership models. In Handbook of advanced multilevel analysis, Hrsg. Joop J. Hox und Kyle J. Roberts, 313–334. New York/London: Routledge.
3. Bickel, Robert. 2007. Multilevel analysis for applied research. New York/London: The Guilford Press.
4. Bovaird, James A. 2007. Multilevel structural equation models for contextual factors. In Modeling contextual effects in longitudinal studies, Hrsg. Todd D. Little, A. Bovaird James und Noel A. Card. Mahwah: Lawrence Erlbaum Associates.
5. Brambor, Thomas, William R. Clark, und Matt Golder. 2006. Understanding interaction models. Improving empirical analyses. Political Analysis 14(1): 63–82.