1. Alexander, P. and Hudson, R.F. "Wool: Its Chemistry and Physics ," New York, Reinhold Publishing Corp., 1954, p. 404.
2. Moncrieff, R.W. "Wool Shrinkage and Its Prevention," New York, Chemical Publishing Co., 1954, p. 576.
3. Richardson, E.G. "Relaxation Spectrometry," Amsterdam, North-Holland Publishing Co., 1957, p. 140.
4. Wool Fabric Stabilization by Interfacial Polymerization. Part I: Polyamides