@techreport{plt-tr2008-tools-v4.0.1, author = {Robert Bruce Findler}, title = {Plugins: Extending {DrScheme}}, number = {PLT-TR2008-tools-v4.0.1}, type = {Reference Manual}, institution = {PLT Scheme Inc.}, month = {June}, year = {2008}, url = {http://download.plt-scheme.org/doc/4.0.1/pdf/tools.pdf}, note = {\url{http://plt-scheme.org/techreports/}} }