@article{smink2019frontiers,
   author     = "Wouter A. C. Smink and Jean-Paul Fox and Tjong Kim Sang, Erik and Anneke M. Sools and Gerben J. Westerhof and Bernard P. Veldkamp",
   title      = "{Understanding Therapeutic Change Process Research through Multilevel Modelling and Text Mining}",
   journal    = "Frontiers in Psychology",
   number     = 10,
   issue      = 1186,
   misc       = "doi:10.3389/fpsyg.2019.01186",
   year       = 2019
}