- Capture of Planktonic Microbial Diversity in Fractures by Long-Term Monitoring of Flowing Boreholes, Evander Basin, South Africa. Geomicrobiology Journal. 28:275-300.
- Geogas transport in fractured hard rock – Correlations with mining seismicity at 3.54km depth, TauTona gold mine, South Africa. Applied Geochemistry. 26:2134-2146.
- Neon identifies two billion year old fluid component in Kaapvaal Craton. Chemical Geology. 283:287-296.