Тевяшев, А. Д., and О. И. Матвиенко. “The Mathematical Model and the Method of Optimal Stochastic Control over the Modes of the Water Main Operation”. Eastern-European Journal of Enterprise Technologies, vol. 6, no. 4(78), Dec. 2015, pp. 45-53, doi:10.15587/1729-4061.2015.55469.