1. Associate Professor, Division of Wood Science and Technology, Luleå Univ. of Technology, SE-931 87 Skellefteå, Sweden.
2. M.S., Martinsons Träbroar AB, Kroksjön 230, SE-93195 Skellefteå, Sweden.
3. Lab. Engineer, Wood Technology, SP Technical Research Institute of Sweden, Skeria 2, SE-931 77 Skellefteå, Sweden.