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Kapitonov VV, Jurka J.Kapitonov VV, et al.Proc Natl Acad Sci U S A. 2003 May 27;100(11):6569-74. doi: 10.1073/pnas.0732024100. Epub 2003 May 12.Proc Natl Acad Sci U S A. 2003.PMID: 12743378Free PMC article.
Kapitonov VV, Jurka J.Kapitonov VV, et al.Proc Natl Acad Sci U S A. 2006 Mar 21;103(12):4540-5. doi: 10.1073/pnas.0600833103. Epub 2006 Mar 14.Proc Natl Acad Sci U S A. 2006.PMID: 16537396Free PMC article.