M. Barha, S. Hmimou, M. A. Kerroum, and H. A. Lemqeddem "The Internal Reliability of a Questionnaire on the Impact of Enterprise Resource Planning on the Performance of Moroccan Companies", Advances in Science, Technology and Engineering Systems Journal, vol. 6, no. 5, pp. 59–64, 2021, doi: 10.25046/aj060508.