APA

Sjögren L., . (2006). Assessment of maintenance and operation performance on roads. : TRA-Transport Research Arena Europe 2006: Göteborg, Sweden, June 12th-15th 2006: greener, safer and smarter road transport for Europe, Paper.

Chicago

Sjögren Leif, . 2006. Assessment of maintenance and operation performance on roads. : TRA-Transport Research Arena Europe 2006: Göteborg, Sweden, June 12th-15th 2006: greener, safer and smarter road transport for Europe, Paper.

Harvard

Sjögren L., . (2006). Assessment of maintenance and operation performance on roads. : TRA-Transport Research Arena Europe 2006: Göteborg, Sweden, June 12th-15th 2006: greener, safer and smarter road transport for Europe, Paper.

MLA

Sjögren Leif, . Assessment of maintenance and operation performance on roads. : TRA-Transport Research Arena Europe 2006: Göteborg, Sweden, June 12th-15th 2006: greener, safer and smarter road transport for Europe, Paper. 2006.