@misc{gonin_hydroforming_test_1998, 
author={Gonin, I.,Jelezov, I.,Kaiser, H.,Singer, W.,Oehring, M.,Priesmeyer, H.G.,Schnieber, R.},
title={Hydroforming test of back extruded niobium tube},
year={1998},
howpublished = {conference lecture: null; null},
note = {Online available at: \url{} (DOI). Gonin, I.; Jelezov, I.; Kaiser, H.; Singer, W.; Oehring, M.; Priesmeyer, H.; Schnieber, R.: Hydroforming test of back extruded niobium tube. Conf. Instituto Nationale di Fysika Nucleare, Workshop series. 1998.}}