@article{1368113,
      recid = {1368113},
      author = {Bach, Volker, and Bru, J.-B.},
      title = {Diagonalizing quadratic bosonic operators by  non-autonomous flow equations /},
      pages = {1 online resource (134 pages).},
      url = {http://library.usi.edu/record/1368113},
}