@article{vanitha_varma_ramesh_2013,  title={Floating tablets of hydralazine hydrochloride: optimization and evaluation},  volume={49},  ISSN={1984-8250},  url={https://doi.org/10.1590/S1984-82502013000400021},  DOI={10.1590/S1984-82502013000400021},  number={4},  journal={Brazilian Journal of Pharmaceutical Sciences},  publisher={Universidade de São Paulo, Faculdade de Ciências Farmacêuticas},  author={Vanitha, Kondi and Varma, Mohan and Ramesh, Alluri},  year={2013},  month={Oct},  pages={811–819} }