@article{Sanderson2015,
author = {Sanderson, W.C. and Scherbov, S.},
title= {Are we overly dependent on conventional dependency ratios},
year = {2015},
doi = {10.1111/j.1728-4457.2015.00091.x},
volume = {14},
number = {4},
pages = {687--708},
}