@misc{Helgertz2020, author = {Helgertz, J. and Ruggles, S. and Warren, J.R. and Fitch, C.A. and Goeken, R. and Hacker, J.D.}, title= {IPUMS Multigenerational Longitudinal Panel: Version 1.0 (1.0 ed.)}, year = {2020}, URL = {https://www.ipums.org/projects/ipums-usa/d016.v1}, }