Bernskiold, A., Metoder för mätning av textilmaterials mekaniska egenskaper. TEFO. Mekaniska egenskaper hos textila material, Goteborg, p. 129 (1956).
2.
Dreby, E.C., "The Planoflex. A Simple Device for Evaluating the Pliability of Fabrics ," Am. Dyestuff Rptr.30, 651 (1941).
3.
Dreby, E.C., "Physical Methods for Evaluating the Hand of Fabrics and for Determining the Effects of Certain Textile Finishing Processes." Am. Dyestuff Rptr.31, P497 (1942).