@article{ito_scárdua_2003,  title={On holomorphic one-forms transverse to closed hypersurfaces},  volume={75},  ISSN={0001-3765},  url={https://doi.org/10.1590/S0001-37652003000300001},  DOI={10.1590/S0001-37652003000300001},  number={3},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={Ito, Toshikazu and Scárdua, Bruno},  year={2003},  month={Sep},  pages={265–269} }