@techreport{NollRieger05,
 author = {Thomas Noll and Stefan Rieger},
 title = {Optimization of Straight--Line Code Revisited},
 institution = {RWTH Aachen University, Dept.\ of Computer Science},
 address = {Germany},
 series = {Aachener Informatik Berichte},
 number = {2005--21},
 month = {nov}
 year = {2005},
 url = "http://aib.informatik.rwth-aachen.de/2005/2005-21.ps.gz", 
}