Орiшко Р., and Головiн В. А. “Constellation Modification Method for OFDM Peak Power Reduction”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, no. 46, Oct. 2011, pp. 85-89, doi:10.20535/RADAP.2011.46.85-89.