1. B. H. Bjurulf, 1972 . Parlamentariska voteringsmetoder, Stateos offentliga utredningar (SOU), 1972 : 15 bil 14.
2. Ch. R. Plott, and M. E. Levine, 1975 . ?On Using the Agenda to Influence Group Decisions: Theory, Experiments, and An Application ?, unpublished paper, California Institute of Technology.
3. The Paradox of Voting and Congressional Rules for Voting on Amendments