Hyposalinity has not been effective for me in treating flukes, but I haven't used that method for years because of an increased incidence in Uronema infections, and I never went as low as people do now (1.009????) I used the standard from the original paper by Cheung - 1.0125
Just to clarify; if you plan on using FW dips or formalin baths for gill flukes, you must immediately move the fish to an uninfected tank. In fact, you may have to do this multiple times if you are dealing with an egglaying species of fluke. Some public aquariums used to try and "out run" flukes by having two systems - FW or formalin dipping as they moved the fish between the systems, sterilizing each system in turn. What a HUGE amount of water that used!
As Bill pointed out, praziquantel will work, and has the added bonus of working in-situ, with just a water change or two during the process (depending on which treatment you use).
Kevin2000 had a vital point, if you are writing an article on fish diseases; you should already know what to do from prior experience. At the very least, as Bill suggests, reference Noga's book.
Jay