1. Investigation of smear zone around vertical drain;Bo,2000
2. Bo, M.W., Chu, J., Low, B.K., Choa, V., 2003. Soil Improvement: Prefabricated Vertical Drain Technique, ISBN 981-243-044-X.Thomson Learning, Singapore, 341pp.
3. Deformation and consolidation around encased stone columns;Castro;Geotext. Geomembranes,2011
4. Practical considerations for using vertical drains in soil improvement projects;Chu;Geotext. Geomembranes,2004
5. Improved performance of soft clay foundations using stone columns and geocell-sand mattress;Dash;Geotext. Geomembranes,2013