Computational Science and Its Applications - ICCSA 2019 19th International Conference, Saint Petersburg, Russia, July 1-4, 2019, Proceedings, Part I - Misra, Sanjay; Misra, Sanjay; Gervasi, Osvaldo; Gervasi, Osvaldo; Murgante, Beniamino; Murgante, Beniamino; Stankova, Elena; Stankova, Elena; Korkhov, Vladimir; Korkhov, Vladimir; Torre, Carmelo; Torre, Carmelo; et al. (Springer International Publishing : Imprint: Springer, 2019)