Suayah, Ismail B.; Miller, Jonathan S.; Miller, Brent V.; Bayer, Tovah M.; Rogers, John J.W. (April 2006). ”Tectonic significance of Late Neoproterozoic granites from the Tibesti massif in southern Libya inferred from Sr and Nd isotopes and U–Pb zircon data”. Journal of African Earth Sciences 44 (4–5): sid. 564. doi:10.1016/j.jafrearsci.2005.11.020. ISSN1464-343X.
Julg, A. (Februari 1998). ”A theoretical study of the absorption spectra of Pb+ and Pb3+ in site K+ of microcline: application to the color of amazonite”. Physics and Chemistry of Minerals (Springer-Verlag) 25 (3): sid. 229–233. doi:10.1007/s002690050108. ISSN1432-2021.
Suayah, Ismail B.; Miller, Jonathan S.; Miller, Brent V.; Bayer, Tovah M.; Rogers, John J.W. (April 2006). ”Tectonic significance of Late Neoproterozoic granites from the Tibesti massif in southern Libya inferred from Sr and Nd isotopes and U–Pb zircon data”. Journal of African Earth Sciences 44 (4–5): sid. 564. doi:10.1016/j.jafrearsci.2005.11.020. ISSN1464-343X.
Julg, A. (Februari 1998). ”A theoretical study of the absorption spectra of Pb+ and Pb3+ in site K+ of microcline: application to the color of amazonite”. Physics and Chemistry of Minerals (Springer-Verlag) 25 (3): sid. 229–233. doi:10.1007/s002690050108. ISSN1432-2021.