Andonov, A., P. Dimkin, and F. Iliev. “Non Linear Filtration of Phase Manipulated Signals Having Spread Spectrum under Condition of Structural Indefiniteness”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH, vol. 1, no. 1, Feb. 2023, pp. 67-69, doi:10.46687/jsar.v1i1.20.