Hagerstrand H., Himberg M., Jokikokko E., von Numers M., Mrówczyńska L., Vasemagi A., Lill J.-O. 2017. Otolith elemental characteristics of whitefish (Coregonus lavaretus) from brackish waters of the Gulf of Bothnia, Baltic Sea. Ecology of Freswater Fish. 26(1): 66-74. doi:10.1111.eff.12255