SOFIA (Bulgaria), May 12 (SeeNews) - The earnings before interest, taxes, depreciation and amortization (EBITDA) of Globul, the Bulgarian unit of Greek mobile phone operator Cosmote, rose by 2.7% year-on-year in the first quarter of 2010 to 41.4 million euro ($52.7 million), Cosmote's owner, OTE, said on Wednesday.