Ratono, E. A., B. Suwasono, I. Winarno, and Sutiyo. “ertical xis ind urbine-lettner otor ntegration s ybrid ropulsion ower on a odel hip”. nternational ournal of arine ngineering nnovation and esearch, vol. 9, no. 2, July 2025, pp. 306-13, doi:10.12962/j25481479.v9i2.4990.