Edwards, M. T. & Reeder, J. (2004). ''Uncovering Unexpected Mathematical Connections with the 'Folded' Triangles Problem.'' Ohio Journal of School Mathematics 49. Columbus, Ohio: Ohio Council of Teachers of Mathematics.
Key Curriculum Press (2002). The Geometer's Sketchpad 4.06 [Computer software]. Berkeley, CA: Key Curriculum Press.
Quesada, A. (2000). "The Use of Scripts On Teaching Linear Algebra." Proceedings of the Twelfth Annual International Conference on Technology in Collegiate Mathematics, pp. 329-334, Reading, MA: Addison-Wesley