1. Alkire, S., & Foster, J. (2011). Counting and multidimensional poverty measurement. Journal of Public Economics, 95(7–8), 476–487.
2. Annoni, P., & Brüggemann, R. (2009). Exploring partial order of European countries. Social Indicators Research, 92(3), 471–487.
3. Annoni, P., Fattore, M., & Brüggemann, R. (2011). A multi-criteria fuzzy approach for analyzing poverty structure. Statistica & Applicazioni – Special Issue, 2011, 7–30.
4. Brüggemann, R., & Carlsen, L. (2011). An improved estimation of averaged ranks of partial orders. Match – Communications in Mathematical and in Computer Chemistry, 65, 383–414.
5. Davey, B. A., & Priestley, B. H. (2002). Introduction to lattices and order. Cambridge: CUP.