Brussels, 28/05/2013 (Agence Europe) - Algeria, which is preparing to sign a strategic energy agreement with the EU, seems to be concerned by the downward trend of gas prices in Europe. The official press agency APS reports that the crisis that continues to hold European economies in its grip is beginning to have an effect on gas prices. APS cites the national oil and gas company, Sonatrach, which points out it is faced with requests to revise contracts signed with European import businesses...