1. F.J. Flanagan 1976 Descriptions and analysis of eight new USGS rock standards
2. V. Macháčka I. Rubeška V. Sixta Z. Šulcek 1976 The beryllium, fluorine, lithium, copper, zinc and strontium contents of USGS standard rock samples STM-1, RGM-1, QLO-1, SCo-1, MAG-1, SDC-1 and SGR-1 73 77
3. B.P. Fabbi L.F. Espos 1976 X-ray fluorescence analysis of 21 selected major, minor, and trace elements in eight new USGS standard rocks 89 93
4. Determination of fluorine, chlorine and water in eight USGS reference samples;Troll;Geostandards Newsletter,1980
5. Phosphorus and chlorine content of eight new USGS standard rocks;Johansen;Geostandards Newsletter,1979