Sawn timber - Appearance grading of softwoods - Part 1: European spruces, firs, pines, Douglas firs and larches (including amendment 1:2002); German version EN 1611-1:1999 + A1:2002— 10 стр.
Timber structures - Strength graded structural timber with rectangular cross section - Part 1: General requirements; German version EN 14081-1:2016— 49 стр.