Филиппенко, Игорь Григорьевич, and И.О. Филиппенко. “MULTILEVEL DIRECT AND BACKWARD TRANSFORMATION OF DISCRETE SIGNALS”. Eastern-European Journal of Enterprise Technologies 4, no. 3(46) (July 30, 2010): 29–32. Accessed December 25, 2024. https://journals.uran.ua/eejet/article/view/2942.