Integration of national publication databases – towards a high-quality and comprehensive information base on scholarly publications in EuropeHanna-Mari Puuska, Joonas Nikkanen, Tim Engels, Raf Guns, Dragan Ivanović and Janne PölönenITM Web Conf., 33 (2020) 02001DOI: https://doi.org/10.1051/itmconf/20203302001