Van de Schoot, RensYerkes, Mara A.Mouw, Jolien M.Sonneveld, Hans2014-11-042014-11-042013Van De Schoot, A.G.J. & Yerkes, M.A. 2013. What took them so long? Explaining PhD delays among doctoral candidates. Plos One, 8(7):1-11. [http://www.tandfonline.com/toc/rmps20/current#.UdEkLpz4V8E]1932-6203http://hdl.handle.net/10394/12142What took them so long? Explaining PhD delays among doctoral candidates