Deletion of Tritagonist

Comment: A search at Google Books (3,330 hits) shows that this concept, its history, and its usage, have been discussed in numerous works of literary analysis. For example, http://books.google.com/books?id=I7RDAAAAIAAJ&pg=PA211&dq=tritagonist&hl=en&ei=m3AbTdTIMo-ssAO3nuCPCg&sa=X&oi=book_result&ct=result&resnum=4&ved=0CDIQ6AEwAw#v=onepage&q=tritagonist&f=falsehttp://books.google.com/books?id=ad6EAAAAIAAJ&pg=PA31&dq=tritagonist&hl=en&ei=bnEbTfuoLYz6sAPOvtWtAg&sa=X&oi=book_result&ct=result&resnum=1&ved=0CCMQ6AEwAA#v=onepage&q=tritagonist&f=falsehttp://books.google.com/books?id=O6pJAAAAYAAJ&pg=PA228&dq=tritagonist&hl=en&ei=m3AbTdTIMo-ssAO3nuCPCg&sa=X&oi=book_result&ct=result&resnum=7&ved=0CEAQ6AEwBg#v=onepage&q=tritagonist&f=falsehttp://books.google.com/books?id=k3NnUyqzRNYC&pg=PA561&dq=tritagonist&hl=en&ei=6nIbTa3AEZK-sAOqxK2EDw&sa=X&oi=book_result&ct=result&resnum=3&ved=0CDAQ6AEwAg#v=onepage&q=tritagonist&f=false  And here is one that expands the concept to Indian prose.http://books.google.com/books?id=gv3Q63RD0zgC&pg=PA135&dq=tritagonist&hl=en&ei=m3AbTdTIMo-ssAO3nuCPCg&sa=X&oi=book_result&ct=result&resnum=8&ved=0CEUQ6AEwBw#v=onepage&q=tritagonist&f=falseThat the topic hasn't yet been expanded on Wikipedia is not a reason to delete it: this isn't a BLP,  still applies
Stance: keep
Cited policy: Wikipedia:There is no deadline (WP:NODEADLINE)