@conference{piperidis2015combining,
author = "Piperidis, Stelios and Galanis, Dimitris and Juli Bakagianni and Sofianopoulos, Sokratis",
booktitle = "International Workshop on Worldwide Language Service Infrastructure",
organization = "Springer",
pages = "3--17",
title = "{C}ombining and extending data infrastructures with linguistic annotation services ",
year = "2015",
}