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[2] N. Zhong, A. Skowron, and S. Ohsuga (eds.) New Directions in Rough Sets, Data Mining, and Granular-Soft Computing, LNAI 1711, Springer-Verlag (1999). (SCI)

[3] N. Zhong, L. Zhou, (eds.) Methodologies for Knowledge Discovery and Data Mining, LNAI 1574, Springer-Verlag (1999). (SCI)

[4] Tang, Y. Y., Yang, L. H., Liu, Jiming, and Ma, H., Wavelet Transform and its Applications to Pattern Recognition. World Scientific Publishing, 1999.