@techreport{plt-tr2010-tools-v4.2.4, author = {Robert Bruce Findler}, title = {Plugins: Extending {DrScheme}}, number = {PLT-TR2010-tools-v4.2.4}, type = {Reference Manual}, institution = {PLT Scheme Inc.}, month = {January}, year = {2010}, url = {http://download.plt-scheme.org/doc/4.2.4/pdf/tools.pdf}, note = {\url{http://plt-scheme.org/techreports/}} }