@Article{BenKS13/,
/author = {Peter Benner and Patrick Kürschner and Jens Saak}/,
/title = {An Improved Numerical Method for Balanced Truncation for Symmetric Second Order Systems}/,
/year = 2013/,
/journal = {Mathematical and Computer Modelling of Dynamical Systems}/,
/volume=19/,
/number=6/,
/pages={593--615}/,
/doi = {10.1080/13873954.2013.794363}/,
/note = {Early Version available from \\url{https://www.mpi-magdeburg.mpg.de/preprints/2012/20/}}/,
/}
