::::I don't have a brilliant answer off the top of my head, but it is certainly true that the appeal of shounen-ai/yaoi/BL has been a source of endless fascination among scholars and critics. Apart from the prominent people I've mentioned, they are probably no fewer than 20 less-well-known scholars or graduate students, both in Japan and outside Japan, who have written articles or given conference presentations on the subject. Most are pretty lame, IMO, but it shows there is interest. It might be enough to mention this fact, mention some of the more prominent names, and provide references to what they have written, rather than trying to summarize the content of the material. Does that make sense?