@techreport{mattila2011a,
  title = {A report on wasteflows in Finland, its lifecycle (creation, use, waste) 2011}
  author = {Mattila T., Myllymaa T., Seppälä I., Mäenpää J.},
  url = {file:///C:/Users/JOHANN~1/AppData/Local/Temp/YMra3_2011%20Materiaalitehokkuuden%20parantamisen%20ja%20j%C3%A4tteiden%20v%C3%A4hent%C3%A4misen%20ymp%C3%A4rist%C3%B6innovaatioiden%20tarpeet.pdf},
  year = {2011}
}