AIM: Approximate Intelligent Matching for Time Series Data. - Edward Kim; Joyce M. W. Lam; Jiawei Han 001 (DaWaK, 2000)

Mining Multi-Dimensional Constrained Gradients in Data Cubes. - Guozhu Dong; Jiawei Han 001; Joyce M. W. Lam; Jian Pei 001; Ke Wang 001 (VLDB, 2001)

Mining Constrained Gradients in Large Databases. - Guozhu Dong; Jiawei Han 001; Joyce M. W. Lam; Jian Pei 001; Ke Wang 001; Wei Zou (IEEE Trans. Knowl. Data Eng., 2004)