December 2005: "Four minerals from the Wannenköpfe:
Jeremejevite, Pseudobrookite, Nosean and Titanite"
December 2006: "Gemstones from the Wannenköpfe:
Topaz and Corundum"
in the GEA , a dutch geological/mineralogical magazine.
February 2007: "Mes découvertes au Wannenköpfe"
in Le Regne Mineral , a (or better "the") french mineralogical magazine.
Bulkemstraat 22 6369 XW Simpelveld The Netherlands
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