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2. Cockrell, R. A., Knudson, R. M., Stangenberger, A. G. 1971. Mechanical properties of southern sierra old- and second-growth giant sequoia. California Agric. Exp. Stat. Bulletin 854.
3. Cockrell, R. A. 1973. The effect of specimen preparation on compression wood and normal latewood pits and wall configurations of giant sequoia. Bulletin Internat. Assoc. of Wood Anatomists. 1973, No. 4.
4. Cockrell, R. A., Knudson, R.M. 1973. A comparison of static bending, compression and tension parallel to grain and toughness properties of compression wood and normal wood of a giant sequoia. Wood Sci. Technol. 7: 241?250.
5. Jane, F. W. 1970. The structure of wood. 2nd Edition. Black, London.