Jonnala, Sneha; Fuller, Stephen; Bessler, David - In: Maritime Economics and Logistics 4 (2002) 2, pp. 103-125
Directed graphs and autoregressive conditional heteroskedastic error processes are used in the specification and estimation of an ocean grain rate equation. Results show voyage distance, ship size, contract terms, flag and season are important explainers of rates, as is ship tonnage contracted...