] . 2008. Experimental biomass assessment of three species of freshwater aquatic plants by horizontal acoustics. Journal of Aquatic Plant Management 46: 82-88.
. 2005. Target strength of some European fish species and its dependence on fish body parameters. Fisheries Research 75: 86-96.
. 2008. Two methods to improve the accuracy of target-strength estimates for horizontal beaming. Fisheries Research 93: 324–331.