academic article

• Tabulation of Exact Masses and Comparison ofIsotope Patterns Expected for Geoporphyrin Molecular Ions In Electron Ionization Mass Spectra.  Applied Geochem..  6:105-117. 1991
• Evaluation of Residual Fuel Oil Standard Reference Materials as Trace Element Standards.  Radioanal and Nuclear Chem..  91:361-368. 1985