@article{sousa_magalhães_lima_oliveira_leal-cardoso_1997,  title={Effects of piperitenone oxide on the intestinal smooth muscle of the guinea pig},  volume={30},  ISSN={0100-879X},  url={https://doi.org/10.1590/S0100-879X1997000600014},  DOI={10.1590/S0100-879X1997000600014},  number={6},  journal={Brazilian Journal of Medical and Biological Research},  publisher={Associação Brasileira de Divulgação Científica},  author={Sousa, P.J.C. and Magalhães, P.J.C. and Lima, C.C. and Oliveira, V.S. and Leal-Cardoso, J.H.},  year={1997},  month={Jun},  pages={787–791} }