Fast Algorithms for Computing the Smallest k-Enclosing Disc. - Sariel Har-Peled; Soham Mazumdar (ESA, 2003)

On coresets for k-means and k-median clustering. - Sariel Har-Peled; Soham Mazumdar (STOC, 2004)

Fast Algorithms for Computing the Smallest k-Enclosing Circle. - Sariel Har-Peled; Soham Mazumdar (Algorithmica, 2005)

Coresets for $k$-Means and $k$-Median Clustering and their Applications. - Sariel Har-Peled; Soham Mazumdar (CoRR, 2018)