1. American National Standards Institute (ANSI) 1979: American National Standard, mat-formed wood particleboard, ANSI A208.1
2. American Society for Testing and Materials 1982: Standard methods of evaluating the properties of wood-based fiber and particle panel materials. ASTM D 1037-78. Philadelphia, PA
3. USDA Forest Serv. Gen. Tech. Rep. FPL-10;M. W. Kelly,1977
4. Laufenberg, T. L. 1986: Using gamma radiation to measure density gradients in reconstituted wood products. Forest Prod. J. 36:59–62
5. Ranta, I.: May, H. A. 1978: Zur Messung von Rohdichteprofilen an Spanplatten mittels Gammastrahlen. Holz Roh-Werkstoff 36:467–474