Changes in age and maturity of anadromous whitefish (Coregonus lavaretus) in the northern Baltic Sea from 1998 to 2014Lari Veneranta, Irma Kallio-Nyberg, Irma Saloniemi and Erkki JokikokkoAquat. Living Resour., 34 (2021) 9DOI: https://doi.org/10.1051/alr/2021007