@article{Bullock1996,
author = {Bullock, J.M. and Silvertown, J. and Hill, B.C.},
title= {Plant demographic responses to environmental variation: distinguishing between effects on age structure and effects on age-specific vital rates},
year = {1996},
doi = {10.2307/2261335},
journal = {Journal of Ecology},
volume = {84},
number = {5},
pages = {733--743},
}