Holovatch, Y., Mryglod, O., Szell, M., & Thurner, S. <https://pure.iiasa.ac.at/view/iiasa/307.html>  (2016).  Analyses of a virtual world.    In:  Maths Meets Myths: Quantitative Approaches to Ancient Narratives.  pp. 115-130 Cham, Switzerland: Springer International Publishing.  ISBN 978-3-319-39445-9 10.1007/978-3-319-39445-9_7 <https://doi.org/10.1007/978-3-319-39445-9_7>.