1. Extended self-certification - a step towards more appropriate sickness absence?;Fleten;Norsk Epidemiologi,2009
2. Hesselius P Johansson P Larsson L Monitoring sickness insurance claimants: evidence from a social experiment Upsala:IFAU - Institute for Evaluation of Labour Market and Education Policy; 2005. Working Paper Series 2005:15,
3. Is the individual's sickness absence affected by the sickness absence of the surroundings?;Hesselius;Ekonomisk Debatt,2008
4. Social behaviour in work absence;Hesselius;Scandinavian Journal of Economics,2013
5. Sick of your colleagues‘ absence?;Hesselius;Journal of the European Economic Association,2009