Intra-Genomic Variation in the Ribosomal Repeats of Nematodes Bik, Holly M. ; Fournier, David ; Sung, Way ; Bergeron, R. Daniel ; Thomas, W. Kelley Abstract Publication: PLoS ONE Pub Date: October 2013 DOI: 10.1371/journal.pone.0078230 Bibcode: 2013PLoSO...878230B