@article{NalbachLeyton2018,
  author    = {Peter Nalbach and Vicente Leyton},
  title     = {Magnus expansion for a chirped quantum two-level system},
  journal   = {Physical Review A},
  volume    = {98},
  number    = {2},
  pages     = {023855},
  doi       = {10.1103/PhysRevA.98.023855},
  year      = {2018},
}