@article{cabral_felix_guerra_2006,  title={Heterochromatin diversity and its co-localization with 5S and 45S rDNA sites in chromosomes of four Maxillaria species (Orchidaceae)},  volume={29},  ISSN={1415-4757},  url={https://doi.org/10.1590/S1415-47572006000400015},  DOI={10.1590/S1415-47572006000400015},  number={4},  journal={Genetics and Molecular Biology},  publisher={Sociedade Brasileira de Genética},  author={Cabral, Juliano S. and Felix, Leonardo P. and Guerra, Marcelo},  year={2006},  pages={659–664} }