O. J. Blanchard and C. M. Kahn, “The Solution of Linear Difference Models under Rational Expectations,” Econometrica, Vol. 48, No. 5, 1980, pp. 1305-1311. doi:10.2307/1912186

has been cited by the following article:

• TITLE: Solution for Rational Expectation Models Free of Complex Numbers

  AUTHORS: Frank Hespeler

  KEYWORDS: Rational Expectation Models, Indeterminacy, Potentially Complex Coefficients

  JOURNAL NAME: Theoretical Economics Letters, Vol.1 No.3, November 3, 2011

  ABSTRACT: This paper approaches the problem of the potential for complex-valued solutions within linear macroeconomic models with rational expectations. It finds that these problems are associated with a specific solution method for the underlying model. The paper establishes that the danger of complex-valued solutions always can be eliminated by forcing those solutions to fulfill additional constraints. These constraints are essentially restrictions on the degrees of freedoms in indeterminate solutions.