Differences and similarities between metal clusters in mc-Si materials from different manufacturersT. Buonassisi, A.A. Istratov, T.F. Ciszek, D.W. Cunningham, A.M. Gabor, R. Jonczyk, R. Schindler, M. Sheoran, A. Upadhyaya, A. Rohatgi, B. Lai, Z. Cai, M.A. Marcus, and E.R. Weber
Proc. 14th workshop on crystalline silicon solar cell materials and processes, B. L. Sopori, Editor, NREL, Winter Park, CO, pp.226-229 (2004).