Phylogenetic Analysis of Isolates of the Bursaphelenchus Sexdentati Group Using Ribosomal Intergenic Transcribed Spacer DNA Sequences. J. Nematode Morphol. Syst. 2010, 9 (2), J. Nematode Morphol. Syst., 9 (2): 95-109 (2006, publ. 2007).