About PUSKA M J
About Helsinki Univ. Technology, Espoo, FIN
About NIEMINEN R M
About Helsinki Univ. Technology, Espoo, FIN
About Reviews of Modern Physics
About positron annihilation
About positron trapping
About Positron annihilation
About Electronic structure of surfaces
About Surface structure of solids in general
About 固体
About 固体表面
About 陽電子
About 理論