[1] Jonsdottir, H., Sparf, A.M. and Hanssen, O.J. (2005) Enviromental Benchmarking. Nordic Innovation Centre, Oslo. www.nordicinnovation.net
[2] Messina, G. (2006) Some Technological Contributions to Fuel Savings in Trawlers. Conference on Energy Efficiency in Fisheries Séminaire sur les économies Dténergie à la Pêche, Brussels, 11-12 May 2006, 56.
http://energyefficiency-fisheries.jrc.ec.europa.eu/c/document_library/get_file?uuid=c6537a86-e93d-4c56-9f18-c2768cf8f928&groupId=12762
[3] Parente, J., Fonseca, P., Henriques, V. and Campos, A. (2008) Strategies for Improving Fuel Efficiency in the Portuguese Trawl Fishery. Fisheries Research, 93, 117-124.
http://dx.doi.org/10.1016/j.fishres.2008.03.001
[4] Messina, G. and Notti, E. (2007) Energy Saving in Trawlers: Practical and Theoretical Approaches. Proceedings of the International Conference on Marine Research and Transportation (ICMRT), Ischia, 28-30.
[5] Vincent, B. and Roullot, J. (2006) Towed Gear Optimisation, Application to Trawls. Conference on Energy Efficiency in Fisheries Séminaire sur les économies Dténergie à la Pêche, Brussels, 11-12 May 2006, 40.
[6] Sterling, D. and Klaka, K. (2006) Energy Efficient Fishing: A 2006 Review. Part B Hull Characteristics and Efficiency. Australian Government, Fisheries Research and Development Corporation, Final Report: Part B.
[7] Kristensen, H.O. and Lützen, M. (2012) Prediction of Resistance and Propulsion Power of Ships. Clean Shipping Currents, 1, 6.
[8] Andersson, U. (2000) An Experimental Study of the Flow in a Sharp-Heel Draft Tube. Avdelningen för Strömningslära Institutionen för Maskinteknik. Licentiate Thesis, Technical Universiy of Luleå, Luleå.
[9] Elíasson, H.S. and Egilsson, J.S. (2014) Hydraulic Model (Straumlíkan) Dissertation Submitted for the Partial Fulfillment for the Degree of Engineer; Technical College, School of Marine Engineering, Reykjavík.