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(English Manual 5) A Quick Reference Guide to the Landscape Species Selection Software, Version 2.1

S. Strindberg, K. Didier, 2010 .

Distance Sampling: Recent Advances and Future Directions

David L. Borchers, Len Thomas, J. H. Pollard, 2002 .

Distance 4.1. Release 2: Research unit for wildlife population assessment [computer program]

Stephen T. Buckland, Len Thomas, S. T. Buckland, 2004 .