TY - RPRT TI - Atomic-layer by atomic-layer compositional depth profiling: Surface segregation and impurity cosegregation of Pt-Rh and Pt-Ru alloys. AU - TT Tsong AU - DM Ren AU - M Ahmad PY - 1988 DO - 10.1103/physrevb.38.7428 UR - https://pubmed.ncbi.nlm.nih.gov/9945467/ ID - 9945467 ER -