Debnath, Sohang, and D Durga Naga Laxmi. “Comparative Strength of I Section Pavement Blocks Made of PCC Mixed With Rice Husk Ash”. International Journal of Engineering & Technology, vol. 7, no. 3.29, Aug. 2018, pp. 326-8, https://doi.org/10.14419/ijet.v7i3.29.19186.