1. Cook D (2009) Improvements in horizontal drain design. Ph.D. thesis, Department of Geology and Geological Engineering, Colorado School of Mines
2. Cook DI, Santi PM, Higgins JD (2008a) Horizontal landslide drain design: state-of-the-art and suggested improvements. Environ Eng Geosci XIV(4):241–250
3. Cook DI, Santi PM, Higgins JD, Short RD (2008b) Field-scale measurement of groundwater profiles in a drained slope. Environ Eng Geosci XIV(3):167–182
4. Cornforth DH (2005) Landslides in practice: investigation, analysis, and remedial/preventative options in soils. Wiley, Hoboken
5. Crenshaw BA (2003) Water table profiles in the vicinity of horizontal drains. M. Eng. thesis. Department of Geology and Geological Engineering, Colorado School of Mines