Nonhare, B. P., and O. P. Chaubey. “Effect of Double Ditch Method of Planting on Growth Characteristics of Some Forest Tree Species”. Indian Forester 122, no. 5 (May 1, 1996): 366–370. Accessed December 4, 2025. http://indianforester.co.in/index.php/indianforester/article/view/6509.