@article{Grolle2015,
author = {Grolle, J.},
title= {Historical case studies of famines and migrations in the West African Sahel and their possible relevance now and in the future},
year = {2015},
doi = {10.1007/s11111-015-0237-4},
volume = {37},
number = {2},
pages = {181--206},
}