Pohrebniak, L., and M. Naumenko. “Method of Adaptive Spatial Coding of Signals for Non-Stationary Frequency-Selective Channels of Wireless Communication”. Collection "Information Technology and Security", vol. 5, no. 2, Dec. 2017, pp. 153-65, doi:10.20535/2411-1031.2017.5.2.136991.