@data{a-rational/2003,
author = {Lewbel, Arthur},
publisher = {ZBW - Leibniz Informationszentrum Wirtschaft},
title = {a-rational-rank-four-demand-system},
year = {2003},
version = {1},
url = {https://jda-test.zbw.eu/dataset/a-rational-rank-four-demand-system} 
}