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BERTUZZI, P. and CAUSSIGNAC, J. M., 1988. Measuring in situ soil surface roughness using a laser === profilometer ===. Proc. 4th Int. Colloq. on Spectral Signatures of Objects in Remote Sensing, Aussois, France, 77-85.,

Bertuzzi, P., Caussignav, J. M., Stegnel, P., Morel, G., Lorendeau, J. Y. and Pelloux, G., 1990. An automated, noncontact laser === profile meter ==== for measuring soil roughness in-situ. Soil Science 149, 169-178.
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HTH
bom trabalho!
beatriz