Before revision: The records are converted into a consistent format and made available to researchers through a web-based data dissemination URL IPUMS is housed at the Minnesota Population Center , an interdisciplinary research center at the University of Minnesota, under the direction of Professor Steven Ruggles.<ref>{{cite journal | author=Steven Ruggles |title=“The Minnesota Population Center Data Integration Projects: Challenges of harmonizing census microdata across time and URL journal='2005 Proceedings of the American Statistical Association Government Statistics Section, Alexandria, VA: American Statistical Association, |pages=pp.
After revision: The records are converted into a consistent format and made available to researchers through a web-based data dissemination URL IPUMS is housed at the Instite for Social Research and Data Innovation , an interdisciplinary research center at the University of Minnesota, under the direction of Professor Steven Ruggles.<ref>{{cite journal | author=Steven Ruggles |title=“The Minnesota Population Center Data Integration Projects: Challenges of harmonizing census microdata across time and URL journal='2005 Proceedings of the American Statistical Association Government Statistics Section, Alexandria, VA: American Statistical Association, |pages=pp.