Slovenian Transmission System Operator for gas, the company Geoplin plinovodi d.o.o., with other European Transmission System Operators for gas bayernets GmbH, NET4GAS, s.r.o. and Tauerngasleitung GmbH participates in the Market Survey “Five-Gas Markets Link – 5GL” about connection of five European natural gas markets (Germany, Austria, Czech Republic, Italy and Slovenia). Details of Market Survey, which runs until 28th October 2011 are available on the website www.tgl.co.at/5GL .