M. A. Kłopotek, S. T. Wierzchoń, B. Starosta, D. Czerski, and P. Borkowski, “Dependence of Spectrogram from Graph Spectral Clustering in Text Document Domain onWord Distribution Models”, SI, vol. 31, no. 2, pp. 5–13, Mar. 2025, doi: 10.34739/si.2024.31.01.