Kaith, N. S., et al. “Replacement of Standard Apple Cultivars With Coloured Strains for High Profitability in Shimla District of Himachal Pradesh, India: A Success Story”. International Journal of Economic Plants, vol. 4, no. May, 2, May 2017, pp. 094-7, https://ojs.pphouse.org/index.php/IJEP/article/view/4508.