Andrade, J. B. d., Nunes, G. S., Veiga, M. P., Costa, A. C. S., Ferreira, S. L. C., Amorim, A. M. M., & Reis, S. T. (1997). Spectrophotometric and inductively coupled plasma atomic emission spectrometric determination of titanium in ilmenites after rapid dissolution with phosphoric acid.

Andrade, Jailson Bittencourt de, Genebaldo S. Nunes, Merilio P. Veiga, Antonio Celso Spinola Costa, Sergio Luis Costa Ferreira, Adelaide Maria Mendonça Amorim, y Selma T. Reis. Spectrophotometric and Inductively Coupled Plasma Atomic Emission Spectrometric Determination of Titanium in Ilmenites After Rapid Dissolution With Phosphoric Acid. 1997.

Andrade, Jailson Bittencourt de, et al. Spectrophotometric and Inductively Coupled Plasma Atomic Emission Spectrometric Determination of Titanium in Ilmenites After Rapid Dissolution With Phosphoric Acid. 1997.