TY - RPRT TI - Erratum: Photoionization cross section of hydrogenic atoms: A generating function solution AU - N Shafer AU - R Bersohn PY - 1991 DO - 10.1103/physreva.44.7855.2 UR - https://pubmed.ncbi.nlm.nih.gov/9920605/ ID - 9920605 ER -