Sneli, Jon-Arne, and Torkild Bakken. 2017. “New Records of the Rare Gastropods Erato Voluta and Simnia Patula, and First Record of Simnia Hiscocki from Norway”. Fauna Norvegica 37 (October):20-24. https://doi.org/10.5324/fn.v37i0.2160.