1. Östman B. COST Action E5 Workshop, Finland, 1997.
2. Riberholt H. COST Action E5 Workshop, Finland, 1997.
3. Mehaffey J. COST Action E5 Workshop, Finland, 1997.
4. LeVan SL, Winandy JE. Wood and Fiber Sci. 1990;22(1):113–31.
5. Košı́k M, Reiser V, Doležal J, Mihálik P, Drevársky výskum. 1977;3:175–83.