@techreport{plt-tr2008-guide-v4.0, author = {Matthew Flatt and Robert Bruce Findler and PLT}, title = {Guide: {PLT} Scheme}, number = {PLT-TR2008-guide-v4.0}, type = {Introduction}, institution = {PLT Scheme Inc.}, month = {June}, year = {2008}, url = {http://download.plt-scheme.org/doc/4.0/pdf/guide.pdf}, note = {\url{http://plt-scheme.org/techreports/}} }