Felfernig, Alexander, Gerhard Friedrich, Dietmar Jannach, Christian Russ, and Markus Zanker. “MULTI-SITE PRODUCT CONFIGURATION OF TELECOMMUNICATION SWITCHES”. International Journal of Computing 1, no. 2 (December 31, 2002): 101-107. Accessed May 23, 2025. https://www.computingonline.net/computing/article/view/122.