L. SOBHEE-BEETUL; D. KALUMBA. Stone column reinforcement of a soft South African clay: A laboratory investigation. Geotechnical Engineering Journal of the SEAGS & AGSSEA , Bangkok, Thailand, v. 46, n. 4, p. 81–85, 2015. DOI: 10.14456/seagj.2015.11. Disponível em: https://ph01.tci-thaijo.org/index.php/SEAGS_AGSSEA_Journal/article/view/259249. Acesso em: 17 sep. 2026.