(AGI) Rome, Sept 30 - European stocks opened higher on Tuesdayfollowing better than expected German retail sales figures.Purchases were steady if moderated by the uncertainty in HongKong. The DAX in Frankfurt gained 0.12 percent to 9434.88points, the FTSE 100 in London grew 0.01 percent to 6647.02points, the CAC 40 in Paris was up 0.51 percent to 4380.12points, while the FTSE MIB in Milan advanced 0.35 percent to20,595.37 points. The Madrid Ibex rose 0.35 percent to 10,722.7points. (AGI) . .