Reedijk, M F New (sqrt3 xsqrt 3)R30 degrees phase of Pb on Ge(111) and its consequence for the melting transition. [electronic resource] - Physical review letters Feb 2003 - 056104 p. digital Publication Type: Journal Article ISSN: 0031-9007 Standard No.: 10.1103/PhysRevLett.90.056104 doi