[en] Electron-capture measurements have been performed on ¹³¹Ba and on ¹⁰⁶Agsup(m). For ¹³¹Ba the L/K-and M/L-capture rations of the allowed decay have been measured to the 1048 keV level in ¹³¹Cs. The Qsub(EC) value, the exchange- and overlap-correction factors Xsup(L/K) and Xsup(M/L) and the reduced capture ratios have been determined. For ¹⁰⁶Agsup(m) the L/K-capture ratio of the allowed decay has been measured to the 2757 keV level in ¹⁰⁶Pd. The Q value, the exchange- and overlap-correction factor Xsup(L/K) and the reduced L/K- capture ratio have been derived. The measurements indicate that agreement between experimentally determined capture ratios and exchange-corrected theoretical predictions is fairly good, both for allowed and for first-forbidden non-unique transitions. (Auth./C.F.)