TY - RPRT TI - Two-dimensional angular correlation of electron-positron annihilation on a simple metal surface. AU - Yongming Lou AU - Binglin Gu AU - Jialin Zhu AU - Chang Lee AU - Jiajiong Xiong PY - 1988 DO - 10.1103/physrevb.38.9490 UR - https://pubmed.ncbi.nlm.nih.gov/9945764/ ID - 9945764 ER -