November 21, 2023 Janssen, M.A., A. Lee and H. Sundaram (2016). Stimulating contributions to public goods through information feedback: Some experimental results. PLoS ONE 11(7): e0159537. doi:10.1371/journal. pone.0159537. Home » Janssen, M.A., A. Lee and H. Sundaram (2016). Stimulating contributions to public goods through information feedback: Some experimental results. PLoS ONE 11(7): e0159537. doi:10.1371/journal. pone.0159537.