From the list : Valuation of the Ecosystem by mona_moolah
He has recently been added to the prestigious list of Thomson Institute for Scientific Information Highly Cited researchers, and one paper he co-authored, "The value of the world's ecosystem services and natural capital," which appeared in the May 1997 issue of Nature, has been ranked by Thomson ISI as the second most highly cited work published in the environment/ecology category in the last 10 years. According to the ISI Web of Knowledge Database, Costanza's 368 published works, spanning several fields, have been cited more than 2,500 times to date.

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