C. H. Sekercioglu, G. C. Daily, and P. R. Ehrlich. Proceedings Of The National Academy Of Sciences Of The United States
Of America101(52):18042--18047 (December 2004)
C. H. Sekercioglu, G. C. Daily, and P. R. Ehrlich. Proceedings Of The National Academy Of Sciences Of The United States
Of America101(52):18042--18047 (December 2004)