@article{'Bos1999Takkeling',
   title     = {'Groeicurve en legbegin van de Zwarte Wouw Milvus migrans'},
   author    = {'Bos', 'Johan'},
   journal   = {'De Takkeling'},
   volume    = {7},
   pages     = {92--96},
   year      = {1999}
}