1. The nomenclature of the natural alloys of osmium, iridium and ruthenium based on new compositional data of alloys from world-wide occurrences;Harris;Canadian Mineralogy,1973
2. Sources of Sumerian gold;Maxwell-Hyslop;Iraq,1977
3. The so-called “platinum” inclusions in Egyptian goldwork;Ogden;Journal of Egyptian Archaeology,1976
4. Platinum group metal inclusions in ancient gold artefacts;Ogden;Journal of the Historical Metallurgical Society,1977
5. Application of the laser microprobe and electron microprobe in the analysis of platiniridium inclusions in gold;Whitmore,1973