TY - RPRT TI - Simple analytical expressions for mesomolecular matrix elements. AU - G Aissing AU - HJ Monkhorst AU - YV Petrov PY - 1990 DO - 10.1103/physreva.42.6894 UR - https://pubmed.ncbi.nlm.nih.gov/9903990/ ID - 9903990 ER -