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[CuMoPa92] F. Cucker, J. L. Montaña, and L. M. Pardo. Time Bounded Computations over the Reals. International Journal of Algebra and Computation, 2 No. 4 (1992) 395--408.

[MoPa92] J.L. Montaña, Luis M. Pardo. Lower Bounds for Parallel Arithmetic Computations. Extracta Mathematicae, vol. 7 , N\'um. 1, (1992) 65-68.

[HeKrSlSo92] J. Heintz, T. Krick, A. Slissenko, and P. Solernò. Une borne inferieure pour la construction de chemins polygonaux dans R^n C. R. Acad. Sci. Paris, 309(I):825--830, 1992.