Feiden, Katharina. “The EContentplus-Project „GS Soil”: Assessment and Strategic Development of Inspire Compliant Geodata-Services for European Soil Data”. TÁJÖKOLÓGIAI LAPOK, vol. 7, no. 2, Dec. 2009, pp. 485-7, https://journal.uni-mate.hu/index.php/tl/article/view/4140.