%0 GKSS report %@ %A Schwalbe, K.-H., Zerbst, U., Kim, Y.-J., Brocks, W., Cornec, A., Heerens, J., Amstutz, H. %D 1998 %J %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