References

1. A.I.Saeed, V.Sharov, J. White, J. Li, W.Liang, N. Bhagabati, J. Braisted, M. Klapa, T. Currier, M. Thiagarajan, A. Sturn,
   M. Snuffin, A. Rezantsev, D. Popov, A. Ryltsov, E. Kostukovich, I. Borisovsky, Z. Liu, A. Vintsevich, V. Trush, and J. Quackenbush 2003.
   TM4: A free, open-source system for microarray data management and analysis.
   BioTechniques 34(2): 374-378.
2. This is an implementation of Otsu algorithm used in Spotfinder:
   P. Liao, T. Chen, and P. Chung 2001. A fast algorithm for multilevel thresholding.
   Journal of Information Science and Engineering 17: 713-727.
3. This is a implementation of algorithm for cluster labeling in percolation theory:
   J.Hoshen and R.Kopelman
   Physical Review B, vol.14, number 8, 1976, pp.3438-3445.
   Percolation and cluster distribution. I. Cluster multiple labeling technique and critical concentration algorithm.
4. This is a description of RI Plot limits:
   Vasily Sharov , Ka Yin Kwong , Bryan Frank , Emily Chen , Jeremy Hasseman , Renee Gaspard , Yan Yu , Ivana Yang and John Quackenbush
   The limits of log-ratios, BMC Biotechnology 2004, 4:3 doi:10.1186/1472-6750-4-3
   (http://www.biomedcentral.com/qc/1472-6750/4/3)