Кулявець, Ю. В., О. І. Богатов, and О. А. Єрмакова. “Influence of Errors on the Accuracy of the Spatial Monitoring Results under Redundant Information”. Eastern-European Journal of Enterprise Technologies, vol. 3, no. 9(75), June 2015, pp. 8-13, doi:10.15587/1729-4061.2015.44235.