Aguilar, M. A., Aguilar, F. J., & Negreiros, J. (2009). Off-the-shelf laser scanning and close-range digital photogrammetry for measuring agricultural soils microrelief. Biosystems Engineering, 103(4), 504–517.

Bertuzzi, P., Caussignac, J. M., Stengel, P., Morel, G., Lorendeau, J. Y., & Pelloux, G. (1990). An automated, noncontact laser profile meter for measuring soil roughness in situ. Soil Science, 149(3), 125–184.

Chatzinikos, A., Gemtos, T.A., & Fountas, S. (2013). The use of a laser scanner for measuring crop properties in three different crops in Central Greece. In J.V. Stafford (Ed.), Precision Agriculture’13: Proceedings of the 9th European Conference on Precision Agriculture pp. 129–136. The Netherlands: Wageningen Academic Publishers.

Chéné, Y., Rousseau, D., Lucidarme, P., Bertheloot, J., Caffier, V., Morel, P., et al. (2012). On the use of depth camera for 3D phenotyping of entire plants. Computers and Electronics in Agriculture, 82, 122–127.

Chimi-Chiadjeu, O., Le Hégarat-Mascle, S., Vannier, E., Taconet, O., & Dusséaux, R. (2014). Automatic clod detection and boundary estimation from Digital Elevation Model images using different approaches. Catena, 118, 73–83.

Darboux, F., & Huang, C. (2003). An instantaneous-profile laser scanner to measure soil surface microtopography. Soil Science Society of America Journal, 67(1), 92–99.

Draelos, M., Deshpande, N., & Grant, E. (2012). The Kinect up close: Adaptations for short-range imaging, 2012 IEEE International Conference on Multisensor Fusion and Integration for Intelligent Systems (MFI), pp. 251–256.

Gessesse, G. D., Fuchs, H., Mansberger, R., Klik, A., & Rieke-Zapp, D. H. (2010). Assessment of erosion, deposition and rill development on irregular soil surfaces using close range digital photogrammetry. Photogrammetric Record, 25(131), 299–318.

Helming, K., Romkens, M. J. M., & Prasad, S. N. (1998). Surface roughness related processes of runoff and soil loss: A flume study. Soil Science Society of America Journal, 62(1), 243–250.

ISO 11783-9:2012. Tractors and machinery for agriculture and forestry—serial control and communications data network—part 9: Tractor ECU. International Standards Organization, Switzerland.

ISO 25178-2. (2012). Geometrical product specifications (GPS)—surface texture: Areal—part 2: Terms, definitions and surface texture parameters. Switzerland: International Standards Organization.

Kamphorst, E. C., Jetten, V., Guérif, J., Pitkanen, J., Iversen, B. V., Douglas, J. T., et al. (2000). Predicting depressional storage from soil surface roughness. Soil Science Society of America Journal, 64(5), 1749–1758.

Marinello, F., Bariani, P., De Chiffre, L., & Hansen, H. N. (2007). Development and analysis of a software tool for stitching three-dimensional surface topography data sets. Measurement Science & Technology, 18(5), 1404–1412.

Marinello, F., Pezzuolo, A., Gasparini, F., & Sartori, L. (2013). Three-dimensional sensor for dynamic characterization of soil microrelief. In: J.V. Stafford (Ed.), Precision Agriculture’13: Proceedings of the 9th European Conference on Precision Agriculture (pp. 71–78). The Netherlands: Wageningen Academic Publishers.

Sandri, R., Anken, T., Hilfiker, T., Sartori, L., & Bollhalder, H. (1998). Comparison of methods for determining cloddiness in seedbed preparation. Soil and Tillage Research, 45, 75–90.

Stafford, J.V., & Ambler, B. (1990). Computer vision as a sensing system for soil cultivator control. Proceedings of the Institution of Mechanical Engineers C419/041 (pp. 123–129).

Tanke, N., Long, G.A., Agrawal, D., Valada, A., & Kantor, G.A. (2012). Automation of hydroponic installations using a robot with position based visual feedback. In: F. Rovira-Màs (Ed.) Proceedings of the international conference of agricultural engineering CIGR-Ageng. Spain: Diazotec S. L. Publisher, paper no. C1429.

Viscarra Rossel, R. A., Adamchuk, V. I., Sudduth, K. A., McKenzie, N. J., & Lobsey, C. (2011). Proximal soil sensing: An effective approach for soil measurements in space and time. Advances in Agronomy, 113, 243–291.