1. Horn, R. E., 1989, Mapping Hypertext: Analysis, Linkage, and Display of Knowledge for the Next Generation of On-line Text and Graphics, The Lexington Institute, Lexington, MA.
2. Horn, R. E., 1992a, How High Can it Fly – Examining the Evidence on Information Mapping’s Method of High Performance Communication, The Lexington Institute, Lexington, MA.
3. Horn, R. E., 1992b, Clarifying two controversies about information mapping’s method, Educational and Training Technology International2(29): 109–117;
http://www.stanford.edu/∼rhorn/ClarifyingTwo.html
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4. Horn, R. E., 1993, Structured writing at twenty five, Performance and Instruction, February 1993, pp. 11–17;
http://www.stanford.edu/∼rhorn/Horn-StWritingAt25.html
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5. Horn, R. E., 1995, Structured writing as a paradigm, in: Instructional Development: State of the Art, Romiszowski, A. and Dills, C., eds., Educational Technology Publications, Englewood Cliffs, NJ;
http://www.stanford.edu/∼rhorn/HornStWrAsParadigm.html
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