Pocket-book on timber constructions. Eighth fully revised edition. V.2.: German standard DIN 1052 and comment. Formulars - Tables- Nomograms. 8. ed. [German
Research projects in the fields of land use, food science, forest and forest products science as well as veterinary medicine 1989. Pt.4: Forest and forest products science. [German
Koehler C.U ; Gottschald M ; Lassen R ; Dirnfeldner E. (comps.)
Dimensions and calculations in timber constructions. 1: Principles. Timber as construction material. Strength calculations and construction of load-carrying parts. 3. ed. [German
Research projects in the fields of agriculture, food science, forest and forest products science and veterinary medicine in 1987. Pt.4: Forest and forest products science. [German
Zentralstelle fuer Agrardokumentation und Information (ZADI), Bonn (Germany, F.R.). Bundesminister fuer Ernaehrung, Landwirtschaft und Forsten, Bonn (Germany, F.R.)