@article{cavalcanti_fonseca_caetano_hickmann_2001,  title={Coherent soliton propagation through doped optical fibers: cloning, breakup, and soliton interactions},  volume={73},  ISSN={0001-3765},  url={https://doi.org/10.1590/S0001-37652001000200005},  DOI={10.1590/S0001-37652001000200005},  number={2},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={CAVALCANTI, SOLANGE B. and FONSECA, EDUARDO J. DA S. and CAETANO, DILSON P. and HICKMANN, JANDIR M.},  year={2001},  month={Jun},  pages={197–209} }