Norman M. Halden, Sergio R. Mejia, John A. Babaluk, James D. Reist, Allan H. Kristofferson, John L. Campbell, William J. Teesdale,
Oscillatory zinc distribution in Arctic char (Salvelinus alpinus) otoliths: Fisheries Research. ,vol. 46, pp. 289- 298 ,(2000) ,
10.1016/S0165-7836(00)00154-5