%0 GKSS report %@ %A Schwalbe, K.-H.,Zerbst, U.,Kim, Y.-J.,Brocks, W.,Cornec, A.,Heerens, J.,Amstutz, H. %D 1998 %J %N %P %T EFAM ETM 97 - the ETM method for assessing the significance of crack-like defects in engineering structures, comprising the versions ETM 97/1 and ETM 97/2 %U %X