Oheimb, Katharina C. M. von; Oheimb, Parm Viktor von; Hirano, Takahiro; Do, Tu Van; Ablett, Jonathan; Luong, Hao Van; Pham, Sang Van; Naggs, Fred (2019). "Cryptic diversity of limestone karst inhabiting land snails (Cyclophorus spp.) in northern Vietnam, their evolutionary history and the description of four new species". PLOS One14(10): e0222163. PMID31644567, doi:10.1371/journal.pone.0222163.
Oheimb, Katharina C. M. von; Oheimb, Parm Viktor von; Hirano, Takahiro; Do, Tu Van; Ablett, Jonathan; Luong, Hao Van; Pham, Sang Van; Naggs, Fred (2019). "Cryptic diversity of limestone karst inhabiting land snails (Cyclophorus spp.) in northern Vietnam, their evolutionary history and the description of four new species". PLOS One14(10): e0222163. PMID31644567, doi:10.1371/journal.pone.0222163.