1. Estimating soil properties with a mobile phone;Aitkenhead,2016
2. Estimating soil properties from smartphone imagery in Ethiopia;Aitkenhead;Comput. Electron. Agric.,2020
3. Evaluation of soil colour under field conditions by using Gretag Macbeth Eye-One Photo device;Baibekov;Izvestiya of Timiryazev Agricultural Academy,2007
4. Spectrophotometric color measurement in situ in well drained sandy soils;Barrett;Geoderma,2002
5. Colorimetry, CIE Techn. Rep., Vienna: CIE Central Bureau, 2004, no. 15, 2004.