Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
SofTech
open-in-new
<h2 id="references">References</h2> <ol> <li id="fn:1"><p>Brackett, John (7 May 2004). "Oral history interview with John Brackett and Doug Ross". University of Minnesota. hdl:11299/107151. <a href="https://conservancy.umn.edu/handle/11299/107151" target="_blank">https://conservancy.umn.edu/handle/11299/107151</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Essig PLM. "Affiliates". Retrieved 25 May 2022. <a href="https://essigplm.com/about-us/affiliates/" target="_blank">https://essigplm.com/about-us/affiliates/</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> </ol>