M. Parvin, M. Haque, F. Akhter, M. Moniruzzaman, and A. Khaldun, “Effect of different levels of NAA on in vitro growth and development of shoots of <i>Dendrobium</i> orchid”, Bangladesh J. Agric. Res, vol. 34, no. 3, pp. 411–416, Dec. 2009.