@article{codevilla_castilhos_bergold_2013, title={A review of analytical methods for the determination of four new phosphodiesterase type 5 inhibitors in biological samples and pharmaceutical preparations}, volume={49}, ISSN={1984-8250}, url={https://doi.org/10.1590/S1984-82502013000100002}, DOI={10.1590/S1984-82502013000100002}, number={1}, journal={Brazilian Journal of Pharmaceutical Sciences}, publisher={Universidade de São Paulo, Faculdade de Ciências Farmacêuticas}, author={Codevilla, Cristiane Franco and Castilhos, Tamara dos Santos and Bergold, Ana Maria}, year={2013}, month={Jan}, pages={1–11} }