Search for: [References = "5. Callaway R.M., Brooker R.W., Choler P., Kikvidze Z., Lortie C.J., Michalet R., Paolino L., Pugnaire F.I., Newingham B., Aschehoug E.T., Armas C., Kikodze D., Cook B.J., 2002. Positive interactions among alpine plants increase with stress. Nature, 417, pp. 844\-848."]

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