S. O. Semerikov, N. M. Kiianovska, and N. V. Rashevska, “The early history of computer-assisted mathematics instruction for engineering students in the United States: 1965-1989”, Educ. Technol. Q., vol. 2021, no. 3, pp. 360–374, Aug. 2021, doi: 10.55056/etq.18.