Telecommunication journal Volume 60 Issue 12 Issue 11 Issue 10 Issue 9 Issue 8 Issue 7 Issue 6 Issue 5 Issue 4 Issue 3 Issue 2 Issue 1 Volume 59 Issue 12 Issue 11 Issue 10 Issue 9 Issue 8 Issue 7 Issue 6 Issue 5 Issue 4 Issue 3 Issue 2 Issue 1 Volume 58 Issue 8 Issue 7 Issue 4 Issue 3 Issue 2 Issue 01 Volume 57 Issue 11 Issue 6