Institution: | 1.Department of Geosciences and Natural Resource Management, University of Copenhagen, ?ster Volgade 10, 1350, Copenhagen, Denmark ;2.Department of Computer Sciences, University of Copenhagen, Universitetsparken 1, 2100, Copenhagen, Denmark ;3.Institute for Scientific & Technological Information, Council for Scientific & Industrial Research, Cantonments, P.O. Box CT-2211, Accra, Ghana ; |