Авраменко, В. П., А. К. Парамонов, and А. В. Попов. “Formation of Half-Tone Images by Means of Gosper Fractal”. Eastern-European Journal of Enterprise Technologies, vol. 5, no. 2(53), Nov. 2011, pp. 8-11, doi:10.15587/1729-4061.2011.508.