@article{Settersten1997,
author = {Settersten, Jr., R.A. and Mayer, K.U. },
title= {The measurement of age, agestructuring, and the life course},
year = {1997},
doi = {10.1146/annurev.soc.23.1.233},
journal = {Annual Review of Sociology},
volume = {23},
pages = {233--261},
}