We are extremely pleased to congratulate Alysson Bessani, LASIGE integrated researcher, for being one of the top scientists, at the 2019 year, at his research area: Networking & Telecommunications.

He has been featured on the list of the top 2% for the single year of 2019 at the world's most-cited scientists compiled by the prestigious Stanford University, California, USA.

The exhaustive single year (2019) list has 161.441 persons with nearly 552 scientists affiliated with several Portuguese institutions.

This database includes the top 2 percent of scientists of the world from different fields on the basis of standardized citation indications. These include information on the number of citations, H -Index, co-authorship and a composite indicator. The results were published in Mendeley Data recently and they have been classified into 22 scientific fields and 176 sub-fields in the report. This large database created by experts at Stanford University led by Dr John Ioannidis is also based on data from Scopus that ranks journals and gives a citation index. And why this study? Because there is no large scale database that systematically ranks all the most-cited scientists in each and every field to a sufficient ranking depth. There are some like Google Scholar that allow scientists to create their profiles and share them in public.