A. K. Bisht, S. Manjkhola, and M. Joshi, “Comparative Account of Two High Value Species of Himalayas: <I>Angelica glauca</I> Edgew. and <I>Angelica archangelica</I> Linn”., Indian Forester, vol. 129, no. 10, pp. 1241–1248, Oct. 2003.