1. AEC. (2019).Lok Ma Chau habitat creation and management plan. Contract No. M1070‐13C. Ecological monitoring and adaptive management advice services for the Lok Ma Chau and West Rail wetlands.
2. Agriculture Fisheries and Conservation Department (AFCD). (2006).Hong Kong biodiversity database.Lutra lutra.http://www.afcd.gov.hk/english/conservation/hkbiodiversity/database/popup_record.asp?id=3781&lang=en
3. Agriculture Fisheries and Conservation Department (AFCD). (2020).Marine fish culture pond fish culture and oyster culture. Agriculture Fisheries and Conservation Department‐Fisheries‐Aquaculture‐Marine fish culture pond fish culture and oyster culture (afcd.gov.hk).
4. Methods to identify the prey of invertebrate predators in terrestrial field studies
5. Lessons from the use of non-invasive genetic sampling as a way to estimate Eurasian otter population size and sex ratio