Snyder, James M.; Kramer, Gerald H. (1988) Fairness, self-interest, and the politics of the progressive income tax Journal of Public Economics; Vol. 36; No. 2;

Kramer, Gerald H. (1983) The ecological fallacy revisited: Aggregate- versus individual-level findings on economics and elections, and sociotropic voting American Political Science Review; Vol. 77; No. 1;