@article{varella_bettega_natalense_ferreira_lima_2001,  title={Applications of the Schwinger Multichannel method with pseudopotentials to electron scattering from polyatomic molecules II: rotational excitation cross sections},  volume={31},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332001000100004},  DOI={10.1590/S0103-97332001000100004},  number={1},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Varella, Márcio T. do N. and Bettega, Márcio H. F. and Natalense, Alexandra P. P. and Ferreira, Luiz G. and Lima, Marco A. P.},  year={2001},  month={Mar},  pages={21–29} }