H. B. Naithani, M. Pal, and S. T. S. Lepcha, “Gregarious Flowering of <I>Thamnocalamus spathiflorus</I> and <I>T. falconeri</I>, Bamboos from Uttaranchal, India”, Indian Forester, vol. 129, no. 4, pp. 517–526, Apr. 2003.