@article{ Solr-1606061070, title = {Graph algebra: mathematical modeling with a systems approach}, journal = {Sage University papers / Quantitative applications in the social sciences}, series = {Sage University papers / Quantitative applications in the social sciences}, author = {Brown, Courtney}, address = {Los Angeles u.a.}, publisher = {Sage Publications}, year = {2008}, note = {Includes bibliographical references and index}, url = {http://www.gbv.de/dms/hbz/toc/ht015288513.pdf} url = {http://digitale-objekte.hbz-nrw.de/webclient/DeliveryManager?pid=2324671&custom_att_2=simple_viewer} url = {http://www.loc.gov/catdir/toc/ecip0710/2007004811.html} url = {http://www.loc.gov/catdir/enhancements/fy0743/2007004811-b.html} url = {http://www.loc.gov/catdir/enhancements/fy0743/2007004811-d.html} }