Eelco van Asperen Rommert Dekker Mark Polman Henk de Swaan Arons Waterway, shipping, and ports: modeling ship arrivals in ports. 1737-1744 2003 conf/wsc/2003 Winter Simulation Conference http://doi.acm.org/10.1145/1030818.1031055 db/conf/wsc/wsc2003.html#AsperenDPA03