@article{articlec7ff5d1f,
title   = {The state of the art on collective intelligence in online educational technologies},
author = {Oliveira, Thyago Tenório Martins de and Isotani, Seiji and Pinto, Ig Ibert Bittencourt Santana and Lu, Yu},
year = {2021},
doi = {10.1109/TLT.2021.3073559},
journal   = {IEEE Transactions on Learning Technologies}
}