1. Prof. of Wood Chemistry, Forestry Faculty, Univ. of Stellenbosch, Stellenbosch, Republic of South Africa
2. Senior Lecturer, Faculty of Engrg., Univ. of Stellenbosch, Stellenbosch, Republic of South Africa
3. Lecturer in Wood Tech., Forestry Faculty, Univ. of Stellenbosch, Stellenbosch, Republic of South Africa