المؤلفون: Busteed, Gary T., Kats, Lee B., Vandergon, Thomas L., Dagit, Rosi G., Kerby, Jacob L., Fisher, Robert N., Sauvajot, Raymond M.

المصدر: Conservation Biology, 2005 Dec 01. 19(6), 1894-1907.

الوصول الحر: https://www.jstor.org/stable/3591212Test

المؤلفون: Prevedelli, M., Cacciapuoti, L., Rosi, G., Sorrentino, F., Tino, G. M.

المصدر: Philosophical Transactions: Mathematical, Physical and Engineering Sciences, 2014 Oct . 372(2026), 1-15.

الوصول الحر: https://www.jstor.org/stable/24503062Test