158. Karanth, K.U., Nichols, J.D. & Hedges, S. (2012) Estimating abundance and other demographic parameters in elephant populations using capture–recapture sampling: statistical concepts. Monitoring Elephant Populations and Assessing Threats: A Manual for Researchers, Managers and Conservationists (ed S. Hedges), pp. 112–135. Universities Press (India) Private Limited, Hyderabad, India.