Market Distortions and Local Indeterminacy: A General Approach
Teresa Lloyd-Braga, Leonor Modesto, Thomas Seegmuller
Journal of Economic Theory, vol. 151, 2014, p. 216-247.

Tax Rate Variability and Public Spending as Sources of Indeterminacy
Teresa Lloyd-Braga, Leonor Modesto, Thomas Seegmuller
Journal Of Public Economic Theory, vol. 10, 2008, p. 399-421.