Daniel P. Smith, Joshua B. Kitner, Angela D. Norbeck, Therese R. Clauss, Mary S. Lipton, Michael S. Schwalbach, Laura Steindler, Carrie D. Nicora, Richard D. Smith, Stephen J. Giovannoni
PLoS One. 2010; 5(5): e10487. Published online 2010 May 5. doi: 10.1371/journal.pone.0010487