@techreport{plt-tr2009-frtime-v4.1.5, author = {Greg Cooper}, title = {{FrTime}: A Language for Reactive Programs}, number = {PLT-TR2009-frtime-v4.1.5}, type = {Reference Manual}, institution = {PLT Scheme Inc.}, month = {March}, year = {2009}, url = {http://download.plt-scheme.org/doc/4.1.5/pdf/frtime.pdf}, note = {\url{http://plt-scheme.org/techreports/}} }