Francisco de A. T. de CarvalhoYves LechevallierDynamic Clustering of Interval-Valued Data Based on Adaptive Quadratic Distances.1295-1306200939IEEE Trans. Syst. Man Cybern. Part A6https://doi.org/10.1109/TSMCA.2009.2030167db/journals/tsmc/tsmca39.html#CarvalhoL09