Negi, N. D., et al. “Acclimatization and Performance of Micropropagated Clonal Rootstocks and Scion Cultivars of Apple under Different Growing Structures”. Himachal Journal of Agricultural Research, vol. 40, no. 1, June 2014, pp. 39-44, http://hjar.org/index.php/hjar/article/view/118500.