@article{'BosNissim2007Lanius',
   title     = {'Verbreitung und Herkunft von Lachm{\\"o}wen (Larus ridibundus) an der Saar im Winter 1999/2000'},
   author    = {Bos, Johan and 'Nissim', 'Malvina'},
   journal   = {'Lanius'},
   volume    = {33},
   pages     = {18--26},
   year      = {2007}
}