@article{experimentalestimationofnumberofclusters,
  title = {Experimental Estimation of Number of Clusters Based on Cluster Quality},
  author = {Grace G. Hannah and Desikan Kalyani},
  year = {2015},
  eprint = {1503.03168},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1503.03168v1},
}