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Ringrose-Voase, A.J.; Sanidad, W.B. (1996). "A method for measuring the development of surface cracks in soils: application to crack development after lowland rice". Geoderma. 71 (3–4): 245–261. Bibcode:1996Geode..71..245R. doi:10.1016/0016-7061(96)00008-0.