%0 book part,GKSS report %@ %A Ahlf, J.,Bellmann, D.,Schmitt, F. J. %D 1989 %J Radiation embrittlement of nuclear reactor pressure vessel steels: an international review %N %P 115-129 %T Irradiation programs to establish the safty margins of German licensing rules related to RPV steel embrittlement %U %X