@article{helene_takiya_vanin_2001,  title={Variances and covariances in deconvolution of multichannel spectra: 34S (<FONT FACE=Symbol>g</font>, <img src="http:/img/fbpe/bjp/v31n1/02eq06.gif">n) cross section},  volume={31},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332001000100002},  DOI={10.1590/S0103-97332001000100002},  number={1},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Helene, O. and Takiya, C. and Vanin, V. R.},  year={2001},  month={Mar},  pages={8–14} }