@article{junkes_amboni_yunes_heinzen_2004,  title={Application of the semi-empirical topological index in quantitative structure-chromatographic retention relationship (QSRR) studies of aliphatic ketones and aldehydes on stationary phases of different polarity},  volume={15},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532004000200005},  DOI={10.1590/S0103-50532004000200005},  number={2},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Junkes, Berenice da S. and Amboni, Renata D. de M. C. and Yunes, Rosendo A. and Heinzen, Vilma E. F.},  year={2004},  month={Mar},  pages={183–189} }