SOFIA (Bulgaria), October 23 (SeeNews) – Telekom Austria said on Thursday that earnings before interest, tax, depreciation and amortisation (EBITDA) of its Bulgarian unit, wireless operator Mobiltel, dropped by an annual 10.5% on a like-for-like basis to 113.4 million euro ($143.3 million) in the first nine months of 2014 on account of lower revenues.