@article{jianmin_hongfang_meifu_2002,  title={Resistance of multicellular aggregates to pharmorubicin observed in human hepatocarcinoma cells},  volume={35},  ISSN={0100-879X},  url={https://doi.org/10.1590/S0100-879X2002000200015},  DOI={10.1590/S0100-879X2002000200015},  number={2},  journal={Brazilian Journal of Medical and Biological Research},  publisher={Associação Brasileira de Divulgação Científica},  author={Jianmin, Z. and Hongfang, W. and Meifu, F.},  year={2002},  month={Feb},  pages={255–260} }