author = { Rytkönen, Seppo AND Koivula, Kari AND Orell, Markku },

title = { Patterns of Per-Brood and Per-Offspring Provisioning Efforts in the Willow Tit Parus montanus },

publisher = {Munksgaard International},

isbn = {0908-8857},

isbn = {1600-048X},

year = {1996},

url = { http://slubdd.de/katalog?TN_libero_mab2 }