1. Cassidy, T., Quality Requirements for Fancy Yarn Manufacture, in "Proc. Designing for the Market: Fancy Yarn Technologies," UMIST , U.K. 1986, pp. 137-144.
2. Griffiths, E.T. , Wrap Spun Plain and Fancy Yarns, in "Proc. Tomorrow's Yarns," UMIST, U.K. 1984, pp. 347-386.