1. Workshop on Xylella fastidiosa: Knowledge Gaps and Research Priorities for the EUhttps://efsa.onlinelibrary.wiley.com/doi/epdf/10.2903/sp.efsa.2016.EN-1039
2. IOC (International Olive Council)http://www.internationaloliveoil.org/
3. EPPO (European and Mediterranean Plant Protection Organization)http://www.eppo.int/QUARANTINE/special_topics/Xylella_fastidiosa/Xylella_fastidiosa.htm