4.4 Linear transformations On Transformations and Matrices, Marc Swadener, 4:3, 1973, 44-51, 4.1 Visual Thinking about Rotations and Reflections, Tom Brieske, 15:5, 1984, 406-410, 4.1 The Matrix of a Rotation, Roger C. Alperin, 20:3, 1989, 230, C, 8.3 Rotations in Space and Orthogonal Matrices, David P. Kraines, 22:3, 1991, 245-247, C, 4.1, 4.3, 4.5 Linear Algebra and Affine Planar Transformations, Gerald J. Porter, 24:1, 1993, 47-51, 0.4, 4.1 Rotation Matrices in the Plane without Trigonometry, Arnold J. Insel, 24:1, 1993, 71-73, C The Linear Transformation Associated with a Graph: Student Research Project, Irl C. Bivens, 24:1, 1993, 76-78, 3.1, 9.1 Fractals in Linear Algebra, James A. Walsh, 27:4, 1996, 298-304, 6.3 Additivity + Homogeneity, Michael J. Bradley and Michael St. Vincent and David L. Finn, 30:2, 1999, 133-135, C (see also Joseph Ling, 31:4, 332, C) The Orbits of a Unimodular Affine Transformation, Roman W. Wong, 31:4, 2000, 290-296, 6.3 Linear Transformation of the Unit Circle in R^2, Pratibha Ghatage and Sally Shao, 32:3, 2001, 204-206, C The Mathematics of ÒGo ToÓ Telescopes, Donald Teets, 38:3, 2007, 170-178, 5.6.2