Methods of measurement for equipment used in digital microwave radio - transmission systems - Part 2: Measurements on terrestrial radio-relay systems - Section 9: Service channels IEC 835-2-9 /  
 IEC 835-2-9 
ISO, IEC. 
 - First edition. 
 - Geneva :   ISO :   IEC,   1995. 
 - 35 stron ;   30 cm.