Published on in Vol 9 , No 4 (2021) :Oct-Dec
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/30482, first published
.

1 Department of History, Geography and Communication, University of Burgos, Burgos, Spain
2 Department of Computer Engineering, University of Burgos, Burgos, Spain