Muhammad, A. H., M. I. Nikmatullah, and U. Kalsum AL. “IMPROVED PROPELLER EFFICIENCY OF A FERRY SHIP WITH ASYMMETRIC PRE-SWIRL STATOR”. Journal of Marine-Earth Science and Technology, vol. 2, no. 1, Oct. 2021, pp. 11-17, doi:10.12962/j27745449.v2i1.73.