Y. Shafiq, “Effect of Gibberellic Acid (Gas) and Pre-chilling on Germination per cent of <I>Nothofagus obliqua</I> (mirb.) Oerst. and <I>N. Procera</I> Oerst. Seeds”, Indian Forester, vol. 108, no. 1, pp. 27–33, Jan. 1980.