Quantitative problem structuring methods for multi-actor problems: an analysis of reported applications. - T. E. van der Lei; Wil A. H. Thissen (J. Oper. Res. Soc., 2009)

How to use a systems diagram to analyse and structure complex problems for policy issue papers. - T. E. van der Lei; Bert Enserink; Wil A. H. Thissen; Geertje Bekebrede (J. Oper. Res. Soc., 2011)