H. kurnio, I. Syafri, A. Sudradjat, and M. F. Rosana, “Sabang Submarine Volcano Aceh, Indonesia: Review of Some Trace and Rare Earth Elements Abundances Produced by Seafloor Fumarole Activities”, Indonesian J. Geosci., vol. 3, no. 3, pp. 173–182, Nov. 2016.