@article{IfflandMuellerGronebergetal.2016,
  author    = {Yvonne Iffland and Ruth M{\"u}ller and Jan David Alexander Groneberg and Alexander Gerber},
  title     = {High particulate matter emission from additive-free Natural American Spirit cigarettes},
  journal   = {SpringerPlus},
  volume    = {5},
  number    = {1958},
  pages     = {1 -- 7},
  doi       = {10.1186/s40064-016-3635-x},
  year      = {2016},
}