@article{Ganzeboom1992,
author = {Ganzeboom, H. and Graaf, P. and Treiman, D.},
title= {A standard international socio-economic index of occupational status},
year = {1992},
doi = {10.1016/0049-089X(92)90017-B},
volume = {21},
number = {1},
pages = {1--56},
}