[1] David Sumanth, Productivity Engineering and Management, Mc.Graw Hill Book Co. (1994).
[2] Everett C. Hunt, & Boris Butman. Maritime Engineering Economics and Cost Analysis, Cornell Maritime Press, (1994)
[3] Goss R.O., “Advances in Maritime Economics” Cambridge University Press, Cambridge, UK, (1997)
[4] Gwilliam K.M., Current Issues in Maritime Economics, Kluwer Academic Publishers, (2002)
[5] Kenneth Laudon, and Jane Laudon, Essentials of Management Information Systems, 9th Ed., Pearson Education (2005)
[6] Oum.T.H., Michael W.T., and Waters II. W.G, “Concepts, Methods and Purposes of Productivity Measurements in Transportation” Transportation Research, UK., Vol.26A, No.6, (1992), pp493-505,
[7] Peter Rob, and Carlos Coronel, Database Systems: Design, Implementation, & Management, 7th Edition, Course Technology, (2006)
[8] Philip J.P., and Joseph J.A., Concepts of Database Management, 6th. Ed. Course Technology, Cambridge, MA (2007)
[9] Review of Maritime Transport, (1997-2006) UNCTAD, UN Secretariat, NY
[10] Stopford Martin, “Maritime Economics”, Routledge, (1997)
