LONDON, July 18 (Itar-Tass) - The demand for euro-denominated Gazprom bonds has reached 5.5 billion euros, a London City source, involving in preparing the issue, told Itar-Tass.

Initially, it was planned that Gazprom would float one billion euros worth of bonds, but a demand this powerful can change the situation, according to the source. Gazprom has announced final yield guidance of 3.75 percent on its upcoming five-year bond.