@article{prasad_santana_campos_leite_2007,  title={Potentiometric and conductometric studies on the system acid-isopolytungstate and the formation of lanthanum tungstates},  volume={32},  ISSN={0100-4670},  url={https://doi.org/10.1590/S0100-46702007000100010},  DOI={10.1590/S0100-46702007000100010},  number={1},  journal={Eclética Química},  publisher={Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP},  author={Prasad, S. and Santana, R. A.C. and Campos, A. R.N. and Leite, V. D.},  year={2007},  pages={71–78} }