Greek stocks headed south for the third consecutive day yesterday, in line with other European bourses, with blue chips weakening further and small-caps and mid-caps putting up most of the resistance. The Athens Stock Exchange (ASE) general index slipped 18.95 points, or 0.58 percent, to close at 3,247.46. The blue chip FTSE/ASE 20 index declined 0.48 percent, while the respective indices of 40 and 80, mid-caps and small-caps respectively, finished 0.03 percent and 0.17 percent higher. Nevertheless, the picture among banks was mixed and the sectoral index finished 0.38 percent higher. Among blue chips, Duty Free Shops outperformed with gains of 3.46 percent, while Hellenic Technodomiki and National Bank added 1.95 and 1.04 percent respectively. On the downside, refineries Motor Oil and Hellenic Petroleum shed 3.01 and 2.19 percent respectively, CosmOTE 2.25 percent, Intracom 2.60 percent, OPAP 2.59 percent, Titan 2.19 percent and OTE telecom 0.84 percent. Among sectoral indices, retail trade led with gains of 1.32 percent. Turnover registered a small decline to 196 million euros, of which 79.5 million was accounted for by the four most marketable securities, OPAP, OTE, Bank of Cyprus and National Bank.