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 Sciences44(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 Sciences44(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.