R. V. Bhat and M. M. Singh, “Indigenous Cellulosic Raw Materials for the Production of Pulp, Paper and Board Part Iv.-writing and Printing Papers from <I>Helioteres isora</I>, Linn. (<I>Maror phal</I>)”, Indian Forester, vol. 77, no. 11, pp. 664–675, Nov. 1951.