%0 Journal Article %A Urbanowicz, Jerzy %T Errata to the papers : “Connections between $B_{2,\chi }$ for even quadratic Dirichlet characters $\chi $” and “Class numbers of appropriate imaginary quadratic fields, parts I and II” %J Compositio Mathematica %D 1991 %P 119-125 %V 77 %N 1 %I Kluwer Academic Publishers %U http://archive.numdam.org/item/CM_1991__77_1_119_0/ %G en %F CM_1991__77_1_119_0