Ennio M. Palmeira และ Andrรฉ R.S. Fahel and Gregรณrio. L. S. Araรบjo. (2013) Behaviour of Geogrid Reinforced Abutments on Soft Soil. <i>The Geotechnical Engineering Journal of the SEAGS & AGSSEA</i>, <i>44</i>(4), 9-16.Ennio M. Palmeira และ Andrรฉ R.S. Fahel and Gregรณrio. L. S. Araรบjo. "Behaviour of Geogrid Reinforced Abutments on Soft Soil". The Geotechnical Engineering Journal of the SEAGS & AGSSEA 44 (2013):9-16.Ennio M. Palmeira และ Andrรฉ R.S. Fahel and Gregรณrio. L. S. Araรบjo. Behaviour of Geogrid Reinforced Abutments on Soft Soil. Southeast Asian Geotechnical Society:ม.ป.ท. 2013.