1. Avondo-Bodino, G.: Economic applications of the theory of graphs. Gordon & Breach Publishing Group, New York (1963)
2. Barro, R.: Rational expectations and the role of monetary policy. J. Monetary Econ. 2, 1–32 (1976)
3. Beniger, J., Robyn, D.: Quantitative graphics in statistics: a brief history. Am. Stat. 32(1), 1–11 (1978)
4. Borgelt, C., Gebhardt, J., Krause, R.: Possibilistic graphical models. Working paper. Retrieved from: http://www.borgelt.net/papers/cidm_98.pdf (2002)
5. Brouwer, J.: Über den natürlichen Dimensionsbegriff. J. Reine Angew. Math. 142, 146–152 (1913)