Doporučení ITU-T G.992.3 - Asymmetric digital subscriber line transceivers 2 (ADSL2) [online]. Telekomunikační standardizační sektor ITU, duben 2009 [cit. 2015-01-01]. (SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital sections and digital line system – Access networks). Dostupné online.
