1. Ohutlevyjen liittäminen (Joining of Sheet Metals), MET Tekninen tiedotus 7/99, Metalliteollisuuden Kustannus Oy, Helsinki, 1999, p. 6, ISBN 951-817-705-8, ISSN 0788-0987 (in Finnish).
2. B. Nilsson, E. Sagström, Handbok för Stuknitning (Handbook for Clinching), No. 1, Fakta rapport: Bearbetning och fogning av plat, Sveriges Verkstadsindustrier, Stockholm, 1995, p. 87 (in Swedish).
3. J. Varis, Kuumasinkityn lujan rakenneteräksen puristusliittäminen (Clinching of Zinc-Coated High Strength Structural Steel), Research Report, No. 27, Lappeenranta University of Technology, Department of Mechanical Engineering, Lappeenranta, 1998, p. 122 (in Finnish).
4. The potential of pre-joining in cold-formed steel structures;Pedreschi;Construction Building Mater.,1996
5. Advanced connection techniques for cold-formed steel structures;Pedreschi;J. Struct. Eng.,1997