Luechinger, Simon; Rosinger, Myra; Stutzer, Alois (2007). The impact of postal voting on participation: evidence for Switzerland. Swiss Political Science Review, 13(2):167-202.
Luechinger, Simon; Rosinger, Myra; Stutzer, Alois (2006). The Impact of Postal Voting on Participation, Evidence for Switzerland. Working paper series / Institute for Empirical Research in Economics No. 297, University of Zurich.