Cubo Soma (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Cubo Soma" in Spanish language version.

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fam-bundgaard.dk

ludost.net

bobson.ludost.net

  • Cf. Martin Gardner (1961).The 2nd Scientific American Book of Mathematical Puzzles & Diversions. New York: Simon & Schuster. Reprinted in 1987 by University of Chicago Press, ISBN 0-226-28253-8, p. 65 (online)