You assert that The Forensic Examiner is not peer-reviewed, but a cursory web search confirms that it is. From their website: "The Forensic Examiner® is the official peer-reviewed journal of the American College of Forensic Examiners Institute. This site serves as your source of information for all aspects of the journal, including article archives, contact information, and of course, advertising information."
http://www.theforensicexaminer.com If you review any edition of the journal you’ll see their submission guidelines and overall advisory board. First you claimed that the presentation "relies heavily on Frank S. Zepezauer's article" when it was the source for a single quote from Alan Dershowitz, and nothing else. Then you asked for a citation of McDowell’s work, and we provided citation in a peer reviewed journal. Gross' information also lines up with other reports of the study. Here are a few alternate sources that corroborate his report: https://books.google.co.uk/books?id=EtdMobTttnwC&pg=PA239 http://www.law.northwestern.edu/legalclinic/wrongfulconvictions/exonerations/documents/ilDotsonMcDowell.pdf
https://books.google.co.uk/books?id=ep4PBwAAQBAJ&pg=PA45 The study itself is also available in an early edition of "Practical Aspects of Rape Investigation: A Multidisciplinary Approach" by Robert Hazelwood. We always take source questions very seriously, and if we’ve gotten a piece of information wrong, we want to know that more than anybody and issue a correction. Given the massive amount of time which went into this piece, for any future questions, I ask that you provide specific sourced information on any corrections and review the originally provided source materials.