R. Grigoreva, Diana, and Gulnara A. Gareeva. “Management in the Field of Cleaning Services Using the Information System”. International Journal of Engineering and Technology 7, no. 3.27 (April 21, 2026): 572–574. Accessed May 24, 2026. https://www.sciencepubco.com/index.php/IJET/article/view/18497.