1. CIRFS, The Prospect for the World Markets for Textured Yarns to the Year 2010, European Man-made Fibres Association.
2. Discussions with Oerlikon-Barmag, China, 2009.
3. www.barmag-oerlikon.com/Portaldata/1/Resources/barmag/pdf/barmag_eFK_brochure_en.pdf.
4. The Production of Textured Yarns by Methods Other than the False Twist Technique;Wilson;Textile Progress,1987
5. www.tx.ncsu.edu/jtatm/volume 3 issue 3/articles/ITMA/seyam_ITMA_full.pdf.