Categoric and Ordinal Voting: An Overview. - Harrie C. M. de Swart; Ad van Deemen; Eliora van der Hout; Peter Kop (Theory and Applications of Relational Structures as Knowledge Instruments, 2003)

Characteristic properties of list proportional representation systems. - Eliora van der Hout; Harrie C. M. de Swart; Annemarie ter Veer (Soc. Choice Welf., 2006)

Liberal political equality implies proportional representation. - Eliora van der Hout; Anthony J. McGann (Soc. Choice Welf., 2009)