Changes in plant population density, composition and sward structure of a hill pasture during a pastoral fallow - Nie, Z. N.; Mackay, A. D.; Barker, D. J.; Valentine, I.; Hodgson, J. (Blackwell Science Ltd, 1997)
http://dx.doi.org/10.1111/j.1365-2494.1997.tb02349.x
Keywords: ZA-ZE