(en) IEEE Std 802.3™-2022: IEEE Standard for Ethernet. IEEE. DOI:10.1109/IEEESTD.2022.9844436 (13 mei 2022), "Annex 28D. Description of extensions to Clause 28 and associated annexes", p. 6359 "Auto-Negotiation is mandatory for 1000BASE-T"
(en) IEEE Std 802.3™-2022: IEEE Standard for Ethernet. IEEE. DOI:10.1109/IEEESTD.2022.9844436 (13 mei 2022), "36. Physical Coding Sublayer (PCS) and Physical Medium Attachment
(PMA) sublayer, type 1000BASE-X", p. 1439 "1000BASE-X is based on the Physical Layer standards developed by ANSI INCITS 230-1994 (Fibre Channel Physical and Signaling Interface)."
(en) IEEE Std 802.3™-2022: IEEE Standard for Ethernet. IEEE. DOI:10.1109/IEEESTD.2022.9844436 (13 mei 2022), "36. Physical Coding Sublayer (PCS) and Physical Medium Attachment
(PMA) sublayer, type 1000BASE-X", p. 1512 "Table 38–2—Operating range for 1000BASE-SX over each optical fiber type"