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- Tharanganie BGN, Puswewala UGA (2005), Unsaturated Shear Strength and Matric Suction Characteristics of a Sri Lankan Residual Soil, Proceedings, Third Young Geotechnical Engineers Conference, International Society of Soil Mechanics and Geotechnical Engineering (ISSMGE), Osaka, Japan.
- Puswewala UGA, Tharanganie BGN (2005), Development of Soil-Water Characteristic Curve for a Residual Soil using Triaxial and Pressure-plate Apparatus, Proceedings, 11th Annual Symposium, ERU, University of Moratuwa, pp.129-137.
- Tharanganie BGN, Puswewala UGA (2004), Unsaturated Shear Strength and Matric Suction Characteristics of a Residual Soil, Transactions 2004, The Institution of Engineers Sri Lanka, pp. 169-174.
- Puswewala UGA, Rathnasiri RM, Rathnajothy T (2003), Shear Characteristics of Some Unsaturated Residual Soils, Proceedings, Twelfth Asian Regional Conference on Soil Mechanics and Geotechnical Engineering (12ARC), Singapore, pp. 69-73.
- Rathnasiri RM, Puswewala UGA, Peiris TA (2003), Slope Stability Analysis using Unsaturated Shear Strength Properties, Transactions 2003, The Institution of Engineers Sri Lanka, Vol. 1, Part B, pp. 77-85.
- Ratnajothy T, Puswewala UGA (2001), Matric suction characteristics of some residual soils of Sri Lanka, Transactions 2001, The Institution of Engineers Sri Lanka, Vol.1 Part B, pp. 159-169.
- Ratnajothy T, Puswewala UGA, Kulathilaka SAS (2001), Matric suction characteristics of unsaturated residual soils at Naketiya landslide site, Proc. 7th Annual Symposium, ERU, University of Moratuwa, November, pp. B13-B22.
