1. Manaaki Whenua Landcare Research. Glossary (2019). https://smap.landcareresearch.co.nz/help/glossary/
2. Soil Information Service (CanSIS). Soil Drainage Class (2013). http://sis.agr.gc.ca/cansis/nsdb/soil/v2/snt/drainage.html
3. Natural Resources Conservation Service. Soil Quality Indicators: pH (1998). https://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052208.pdf
4. H. Liu, Z. Liu, B. Taylor, H. Dong, Matching pipeline in-line inspection data for corrosion characterization. NDT & E Int. 101, 44–52 (2019)
5. T. Siraj, Quantification of Uncertainties in Inline Inspection Data for Metalloss Corrosion on Energy Pipelines and Implications for Reliability Analysis . PhD thesis, University of Western Ontario (2018). Electronic Thesis and Dissertation Repository. 5864. https://ir.lib.uwo.ca/etd/5864