We published some of our findings in Reproductive Biology and Endocrinology which is an open-access journal.  Open-access means that we (the authors) retain copyright over our manuscript.  Why should this matter to you? because that allows us to post the manuscript publicly and make it available to you at no cost.

 Click here to go to our paper.  The BioMed Central site is a bit slow today so I've attached my own copy of the Provisional PDF here on ultrasoundformen.org, you should see it at the bottom of this page.

Here's the citation:  Therapeutic ultrasound as a potential male contraceptive: power, frequency and temperature required to deplete rat testes of meiotic cells and epididymides of sperm determined using a commercially available system
Reproductive Biology and Endocrinology 2012, 10:7