Telecontrol equipment and systems- - Part 5-103: Transmission protocols- Companion standard for the informative interface of protection equipment IEC 60870-5-103 /  
 IEC 60870-5-103 
ISO, IEC. 
 - First edition. 
 - Geneva :   ISO :   IEC,   1997. 
 - 203 stron ;   30 cm.