There's been a lot of research done on ants but most of the papers are frustratingly behind paywalls despite having been conducted and written by public institutions. Thankfully, a little google-work yielded this:
http://www.ars.usda....htm?docid=16199
Which appears to be the papers written by Michael Glancey of the USDA. I haven't checked, but you can probably find most of the USDA papers here:
http://search.usa.go...nG.y=0&btnG=Go!
Hope this helps!