@article{galembeck_2003,  title={Aluminum polyphosphate gels structural evolution probed by NMR spectroscopy},  volume={14},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532003000600010},  DOI={10.1590/S0103-50532003000600010},  number={6},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Galembeck, André},  year={2003},  month={Nov},  pages={930–935} }