Victorovna Kuznetsova, Natalia, Ekaterina Victorovna Kocheva, and Nikolay Anatolievich Matev. “Multivariable Classification of Countries of the World in Terms of Innovation Development”. International Journal of Engineering and Technology 7, no. 3.14 (July 25, 2018): 360–368. Accessed May 12, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/17027.