19, “Optimal Intervention in the Presence of Categorical Equity Objectives” (met De‑Piao Tang), in: Public Finance/Finances Publiques 43, n. 1 (1988), p. 79‑95.
19, “Optimal Intervention in the Presence of Categorical Equity Objectives” (mit De‑Piao Tang), Public Finance/Finances Publiques, 43, Nr. 1, S. 79-95, (1988).