1. Industrial Hemp Fact Sheet;Oliver,1999
2. M. Karus, M. Kaup. Use of natural fibres in the German automotive industry.
3. Natural fibre-reinforced biopolymers as construction materials - new discoveries
4. H. Hanselka, A.S. Herrmann, VDI Beritchte Nr. 1235, 1995.
5. A.S. Herrmann, H. Hanselka, H. Nickel, U. Riedel, TECNITEX, Torinto, 1996.