@article{couceiro_couceiro_cabral_1995,  title={Hemagglutinating and fusogenic activities of Newcastle disease virus: studies on receptor binding specificity and pH-induced conformational changes},  volume={90},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761995000400017},  DOI={10.1590/S0074-02761995000400017},  number={4},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Couceiro, E. S. S. and Couceiro, J. N. S. S. and Cabral, M. C.},  year={1995},  month={Jul},  pages={515–520} }