Johnson, H. E., Jr., & Bonissone, P. P. (1983). Expert system for diesel electric locomotive repair. Journal of Forth Application and Research, 1(1), 7–16. https://vfxforth.com/flag/jfar/vol1/no1/article1.pdf
Holland, J. (1992, July 1). Genetic algorithms computer programs that “evolve” in ways that resemble natural selection can solve complex problems even their creators do not fully understand. Scientific American. https://www.scientificamerican.com/article/genetic-algorithms/