Matas Terrón, A., C. Sánchez Barroso, and J. M. Ríos Ariza. “How Covid-19 Lockdown Time Was Predicted: Implications of ‘collective intelligence’ in Educational Research”. IJERI: International Journal of Educational Research and Innovation, no. 15, July 2020, pp. 101-13, doi:10.46661/ijeri.4903.