1. Laboratory studies on fracturing of low-permeability soils;Alfaro;Can. Geotech. J.,2001
2. Estimation of Hydraulic fracture pressure in clay;Anderson;Can. Geotech. J.,1994
3. ASTM F1962, 2011. Standard Guide for Use of Maxi-Horizontal Directional Drilling for Placement of Polyethylene Pipe or Conduit Under Obstacles, Including River Crossings, West Conshohocken, Pennsylvania, United States.
4. Pressure-controlled cavity expansion in clay;Au;Can. Geotech. J.,2006
5. Effects of subsurface cavity expansion in clays;Au;Geotechnique,2007