Tshewang Nidup, and Andrea Frangi. “Significance of Density in Structural Timber Engineering and Density Profile of Bhutanese Softwood Timber”. Zorig Melong | A Technical Journal of Science, Engineering and Technology, vol. 8, no. 2, Aug. 2025, pp. 175-9, https://doi.org/10.17102/zmv8.i2.020.