anchor.diff:  		 1996. The relationship between homoplasy and confidence in a phylogenetic tree. In: 
   		 <em>Homoplasy and the Evolutionary Process</em> (<strong>M. Sanderson and L. Hufford</strong>, eds.). 
   		 San Diego: Academic Press.
  -	</p>
  -	<p>
  -		<strong>Sanderson, M. J., M. J. Donoghue, W. Piel, and T. Eriksson.</strong>
  -		 1994. TreeBASE: a prototype database of phylogenetic analyses and an interactive 
  -		 tool for browsing the phylogeny of life. 
  -		 <em>American Journal of Botany</em>, <strong>81</strong>(6): 183.
   	</p>
   	<p>
   		<strong>Shan, H., K. G. Herbert, W. H. Piel, D. Shasha and J. T. L. Wang.</strong>
  
positive.code: 		 2005. Fast Structural Search in Phylogenetic Databases 
  		 <em>. Evolutionary Bioinformatics Online</em>, <strong>1</strong>: 37-46.
  	</p>
  </div>
negative.code: <div class="gutter">
  	<h1>How to cite</h1>
  	<p>The following publications describe TreeBASE version 2 (the current version), its web services,
  	and the data format it uses. Reference these publications to cite TreeBASE.
  	</p>
  	<p>
  		<strong>Piel, W. H., Chan, L., Dominus, M. J., Ruan, J., Vos, R. A., and V. Tannen</strong>
  		2009. TreeBASE v. 2: A Database of Phylogenetic Knowledge.
  		In: <em>e-BioSphere 2009</em>
  	</p>
  	<p>
  		<strong>Vos, R. A., Balhoff, J. P., Caravas, J. A., Holder, M. T., Lapp, H. Maddison, W. P., 
  			Midford, P. E., Priyam, A., Sukumaran, J., Xia, X. and A. Stoltzfus</strong>	
  		2012. NeXML: rich, extensible, and verifiable representation of comparative data and metadata.
  		<em>Systematic Biology</em> <strong>61</strong>(4): 675-689.
  	</p>	
  	<h1>Further reading about previous versions of TreeBASE</h1>
  	<p>Cite these papers if you are writing about the TreeBASE initiative and previous incarnations.
  	</p>
  	<p>
  		<strong>Morell, V.</strong>
  		 1996. TreeBASE: the roots of phylogeny. 
  		 <em>Science</em> <strong>273</strong>: 569.	
  	</p>
  	<p>		
  		<strong>Piel, W. H., M. J. Donoghue, and M. J. Sanderson.</strong>
  		 2002. "TreeBASE: a database of phylogenetic knowledge." Pp. 41-47. In: 
  		 <strong>Shimura, J., K. L. Wilson, and D. Gordon,</strong> eds. 
  		 <em>To the interoperable "Catalog of Life" with partners Species 2000 Asia Oceanea.</em> 
  		 Research Report from the National Institute for Environmental Studies No. 171, Tsukuba, Japan.
  	</p>	
  	<p>
  		<strong>Sanderson, M. J., M. J. Donoghue, W. Piel, and T. Eriksson.</strong>
  		 1994. TreeBASE: a prototype database of phylogenetic analyses and an interactive 
  		 tool for browsing the phylogeny of life. 
  		 <em>American Journal of Botany</em>, <strong>81</strong>(6): 183.
  	</p>	
  	<h1>Further reading about phyloinformatics</h1>
  	<p>
  		<strong>Blake, J. A., C. J. Bult, M. J. Donoghue, J. Humphries, and C. Fields.</strong> 
  		1994. Interoperability of biological databases: a meeting report. 
  