@article{Goeken2003,
author = {Goeken, R. and Nguyen, C. and Ruggles, S. and Sargent, W.},
title= {The 1880 U.S. population database},
year = {2003},
doi = {10.1080/01615440309601212},
journal = {Historical Methods},
volume = {36},
number = {1},
pages = {27--34},
}