@book{EllwangerEllwanger1998,
  author    = {Ellwanger, Siegfried and Ellwanger, Ulf},
  title     = {Boxen basics : Training, Technik, Taktik},
  publisher = {Pietsch},
  address   = {Stuttgart},
  isbn      = {3-613-50295-X},
  pages     = {139 S. : zahlr. Ill.},
  year      = {1998},
  language  = {de}
}