Ramu Anandakrishnan Alexey Onufriev Analysis of Basic Clustering Algorithms for Numerical Estimation of Statistical Averages in Biomolecules. 165-184 2008 15 Journal of Computational Biology 2 http://dx.doi.org/10.1089/cmb.2007.0144 db/journals/jcb/jcb15.html#AnandakrishnanO08