B. K. Bakshi, Y. N. puri, and S. Singh, “Natural Decay Resistance of Indian Timbers I. Introduction and Method, II. Decay Resistance of Sal (<I>Shorea robusta</I> Gaertn.) and Teak (<I>Tectona grandis</I> L.f)”, Indian Forester, vol. 93, no. 5, pp. 305–328, May 1967.