Prime Minister Costas Karamanlis (center) with his Bulgarian counterpart Sergei Stanishev (right) stand in front of the Tomb of the Unknown Soldier during a welcome ceremony in Sofia yesterday. The Greek prime minister, accompanied by Foreign Minister Dora Bakoyannis, is in Bulgaria on a two-day visit where he is expected to meet with senior officials to discuss boosting ties between the two countries, in areas such as allowing the entry of more Bulgarians into northern Greece for seasonal work. Sources said that Bulgarian officials are also interested in providing Greeks with easier access to their country for shopping trips.