@article{Sistiaga2019, author = "Manu Sistiaga and Bent Herrmann and Roger Bertrand Larsen and Jesse Brinkhof", title = "{Bell-shaped retention curve with indicators.}", year = "2019", month = "9", url = "https://plos.figshare.com/articles/figure/Bell-shaped_retention_curve_with_indicators_/9818477", doi = "10.1371/journal.pone.0222391.g003" }