@inbook{Freire_2019,
title={Availability of Cultural Heritage Structured Metadata in the World Wide Web},
ISBN={9791036538018},
url={http://dx.doi.org/10.4000/books.oep.9024},
DOI={10.4000/books.oep.9024},
booktitle={Connecting the Knowledge Commons — From Projects to Sustainable Infrastructure},
publisher={OpenEdition Press},
author={Freire,
Nuno and Calado,
Pável and Martins,
Bruno},
year={2019},
pages={121–133} }