New Methods of Network Modelling Using Parallel-Hierarchical Networks for Processing Data and Reducing Erroneous Calculation Risk. - Leonid Timchenko; Waldemar Wójcik; Natalia Kokriatskaia; Volodymyr Tverdomed; Oleksandr Poplavskyi; Olga Levchenko; Natalia Kryvinska (CITRisk, 2020)