read.eisen(file,sep="\t",dec=".", format.check = TRUE)
Michael Hoon's Cluster 3.0 http://bonsai.ims.u-tokyo.ac.jp/~mdehoon/software/cluster/
Eisen M.B., P.T. Spellman, P.O. Brown, and D. Botstein. 1998. Cluster analysis and display of genome-wide expression patterns. /Proc. Natl. Acad. Sci. USA /, 95:14863-14868.
De Hoon M.J.L., S. Imoto, J. Nolan, and S. Miyano. Open source clustering software. Bioinformatics *20* (9): 1453--1454 (2004).
Antoine Lucas and Sylvain Jasson, Using amap and ctc Packages for Huge Clustering, R News, 2006, vol 6, issue 5 pages 58-60.