-
International Telecommunication Union (ITU),
ITU-T Recommendations K-Series, K.100 (07/2019): 1-42
-
International Telecommunication Union (ITU),
ITU-T Recommendations K-Series, Supplement 9 (05/2019): 1-22
-
German Commission for Electrical, Electronic & Information Technologies of DIN and VDE (DKE),
DIN EN IEC 60974-1:2018-12 VDE 0544-1:2018-12
-
International Telecommunication Union (ITU),
ITU-T Recommendations K-Series, K.91 Supplement 4 (09/2018): 1-66
-
International Telecommunication Union (ITU),
ITU-T Recommendations K-Series, K.91 (01/2018): 1-80
-
International Telecommunication Union (ITU),
ITU-T Recommendations K-Series, K.90 (07/2018): 1-28
-
International Telecommunication Union (ITU),
ITU-T Recommendations K-Series, K.70 (01/2018): 1-52
-
International Telecommunication Union (ITU),
ITU-T Recommendations K-Series, K.61 (01/2018): 1-30
-
International Telecommunication Union (ITU),
ITU-T Recommendations K-Series, K.52 (01/2018): 1-48
-
International Telecommunication Union (ITU),
ITU-T Recommendations K-Series, Supplement 16 (09/2018): 1-24