Niculescu, A. C., D. Tempelaar, A. Dailey-Hebert, M. Segers, and W. Gijselaers. “Exploring the Antecedents of Learning-Related Emotions and Their Relations With Achievement Outcomes”. Frontline Learning Research, vol. 3, no. 1, Mar. 2015, pp. 1-17, doi:10.14786/flr.v%vi%i.136.