@techreport{plt-tr2009-mzlib-v4.2.1, author = {PLT}, title = {{MzLib}: Legacy {PLT} Libraries}, number = {PLT-TR2009-mzlib-v4.2.1}, type = {Reference Manual}, institution = {PLT Scheme Inc.}, month = {July}, year = {2009}, url = {http://download.plt-scheme.org/doc/4.2.1/pdf/mzlib.pdf}, note = {\url{http://plt-scheme.org/techreports/}} }