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Fullformexpand.com, 2026. "FESN." Accessed January 7, 2026. https://www.fullformexpand.com/fesn/374494.
"FESN." (n.d.). Fullformexpand.com. Retrieved January 7, 2026, from https://www.fullformexpand.com/fesn/374494.
FESN. (2026). Fullformexpand.com. Available at: https://www.fullformexpand.com/fesn/374494 (Accessed: 7 January 2026).