Bakke, T. A. “Histology and Biology of the Larval Stages of Leucochloridium Carus, 1835 (Trematoda, Digenea) As Revealed by Light and Electron Microscopy”. Fauna Norvegica, vol. 3, Dec. 1982, pp. 41-56, doi:10.5324/fn.v3i0.6143.