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, vol. 77, no. 2, Feb. 1951, pp. 130-48, doi:10.36808/if/1951/v77i2/23284.