van Velthoven, Ben C.J. and Peter W. van Wijck. "Additive and Non-Additive Risk Factors in Multiple Causation" Review of Law & Economics, 5.1 (2009): 517-539. Retrieved 24 May. 2013, from doi:10.2202/1555-5879.1340

van Velthoven, B. & van Wijck, P. (2009). Additive and Non-Additive Risk Factors in Multiple Causation. Review of Law & Economics, 5(1), pp. 1-806. Retrieved 24 May. 2013, from doi:10.2202/1555-5879.1340

van Velthoven, Ben C.J. and Peter W. van Wijck. 2009. Additive and Non-Additive Risk Factors in Multiple Causation. Review of Law & Economics. 5(1): 1-806. Retrieved 24 May. 2013, from doi:10.2202/1555-5879.1340