Bowring, Samuel A.; Williams, Ian S. (1999). Priscoan (4.00-4.03 Ga) orthogneisses from northwestern Canada. Contributions to Mineralogy and Petrology. 134: 3. Bibcode:1999CoMP..134....3B. doi:10.1007/s004100050465.
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Bowring, Samuel A.; Williams, Ian S. (1999). Priscoan (4.00-4.03 Ga) orthogneisses from northwestern Canada. Contributions to Mineralogy and Petrology. 134: 3. Bibcode:1999CoMP..134....3B. doi:10.1007/s004100050465.