@article{articlee3b44476,
title   = {Affective states in computer-supported collaborative learning: studying the past to drive the future},
author = {Reis, Rachel Carlos Duque and Isotani, Seiji and Rodriguez, Carla Lopes and Jaques, Patrícia A and Bittencourt, Ig I},
year = {2018},
doi = {10.1016/j.compedu.2018.01.015},
journal   = {Computers and Education}
}