Verma, Veerendra Kumar, et al. “Studies on Yield and Economics of High Value Vegetable Crops Grown under Low-Cost Polyhouse in the Mid-Hill Conditions of Meghalaya”. Indian Journal of Horticulture, vol. 75, no. 04, Dec. 2018, pp. 631-8, doi:10.5958/0974-0112.2018.00105.6.