@ARTICLE{Oka03, author = {Okamura, H and Kitakado, T and Hiramatsu, K. and Mori, M.}, title = {Abundance estimation of diving animals by the double-platform line transect method}, journal = {Biometrics}, year = {2003}, volume = {59}, pages = {512--520}, file = {:Okamuraetal2003.pdf:PDF}, subdatabase = {distance} }