Yu 1987. New material of fresh-water genus Nippononaia (Bivalvia) from western Liaoning, China. Yu, Xihan; Wang, Wuli; Liu, Xianting; Zhang, Wu[Eds]. Mesozoic stratigraphy and palaeontology of western Liaoning, Volume 3., Geological Publishing House, Beijing., 1987: 1-386. Chapter pagination: 117-133