%0 conference paper %@ %A Kaiser, H.,Singer, W.,Weichert, G.,Gonin,I.,Jelezov, I.,Khabiboulline, T.,Kuchtiev, W.,Brokmeier, H.-G.,Priesmeyer, H.-G. %D 1998 %J Proceedings of HEACC 1998 %N %P %T Hydroforming of seamless niobium cavity of TESLA shape %U %X