@article{silva_leonardo_nelson-filho_medeiros_rossi_2006,  title={Pulp response of anionic lyophilized collagen matrix with or without hydroxyapatite after pulpotomy in dog's teeth},  volume={9},  ISSN={1516-1439},  url={https://doi.org/10.1590/S1516-14392006000200012},  DOI={10.1590/S1516-14392006000200012},  number={2},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Silva, Léa Assed Bezerra da and Leonardo, Mario Roberto and Nelson-Filho, Paulo and Medeiros, Alexandra Sárzyla and Rossi, Marcos Antonio},  year={2006},  month={Apr},  pages={175–180} }