OREANDA-NEWS. On April 05, 2007 a Gazprom delegation, led by Alexey Miller, Chairman of the Gazprom Management Committee, paid a working visit to the Republic of Bulgaria, reported the press-centre of  Gazprom. Within the visit, Alexey Miller met with Sergey Stanishev, Prime-Minister of the Republic of Bulgaria. The parties discussed the prospects for further Russian-Bulgarian cooperation development in the oil and gas sector. Particularly, the participants examined the issues relevant to Russian natural gas transit increase via Bulgaria to third countries.