@article{puil_andriessen_kanselaar_2004, 
  title={Exploring Relational Regulation in Computer-Mediated (Collaborative) Learning Interaction: A Developmental Perspective}, 
  DOI={10.1089/109493104323024447}, 
  publisher={Mary Ann Liebert Inc}, 
  author={Puil and Andriessen and Kanselaar}, 
  year={2004}
  }