Selection of ports, tariffs, service frequency, and ship size for a SSS Route in Java IslandJohannes E. Simangunsong, Ade Sjafruddin, Harun Al-Rasyid S. Lubis and Russ Bona FrazilaMATEC Web Conf., 270 (2019) 03015DOI: https://doi.org/10.1051/matecconf/201927003015