1. Agentschap Geografische Informatie Vlaanderen. (2001a). [Digital file]. Tertiary geological map of Belgium. Retrieved fromhttp://www.geopunt.be/catalogus/datasetfolder/e965c068-a1be-43c3-ad0b-34bc44fe1d2c
2. Agentschap Geografische Informatie Vlaanderen. (2001b). [Digital file]. Soil map of Belgium. Retrieved fromhttp://www.geopunt.be/catalogus/datasetfolder/5e337b0e-b532-4671-9387-eeed778d1281
3. Agentschap Geografische Informatie Vlaanderen. (2004). [Digital file]. Landbouwgebruikspercelen toestand 01/01/2004. Brussels: Vlaamse Landmaatschappij afdeling Mestbank. Retrieved fromhttp://www.geopunt.be/catalogus/datasetfolder/f553af58-fb44-408c-86c9-37bcbc745300
4. High-resolution imaging of a vineyard in south of France using ground-penetrating radar, electromagnetic induction and electrical resistivity tomography