@article{Buttler2003,
  author    = {Karl Peter Buttler},
  title     = {Nachruf f{\"u}r Walter Klein : (11. Juni 1927 - 7. Dezember 2002)},
  journal   = {Botanik und Naturschutz in Hessen},
  volume    = {16},
  pages     = {123 -- 126},
  year      = {2003},
}