Optical Spectra of Triphylite, LiFePO₄

• Leckebusch R, Recker K (1973) Die Absorptionsspektren von Triphylin und Lithiophilit. Neues Jahrbuch für Mineralogie, Monatshefte 1973, 70-75.
• Platonov AN (1976) The nature of colour in minerals. Kiev, Naukova Dumka (in Russian).
• Raju AR, Reddy KM, Reddy BJ (1983) Optical and EPR measurements on triphylite. Proceedings of the Indian National Science Academy, Part A:  Physical Sciences 49, 662-8.
• Langer K, Taran MN, Fransolet AM (2006)  Electronic absorption spectra of phosphate minerals with olivine-type structures: I. Members of the triphylite-lithiophilite series, ^M1[6]Li^M2[6](Fe_x²⁺Mn_1-x²⁺)[PO₄]. European Journal of Mineralogy 18, 337-344.