@techreport{plt-tr2003-tools-v204, author = {Robert Bruce Findler}, title = {{PLT} Tools: {DrScheme} Extension Manual}, number = {PLT-TR2003-tools-v204}, type = {Reference Manual}, institution = {PLT Scheme Inc.}, month = {May}, year = {2003}, url = {http://download.plt-scheme.org/doc/204/pdf/tools.pdf}, note = {\url{http://plt-scheme.org/techreports/}} }