Masani, N. J. “Simple Calculations in the Design of Forest Bridges of Stock Spans of 15, 20, 30 and 40 Feet - Part V (b) (Analytical Method)”. Indian Forester 77, no. 5 (May 1, 1951): 343–359. Accessed December 4, 2025. http://indianforester.co.in/index.php/indianforester/article/view/23297.