@article{AFM_2006_31_2_a11,
     author = {R.G. Halburd and R.J. Korhonen},
     title = {Nevanlinna theory for the difference operator},
     journal = {Annales Fennici Mathematici},
     pages = {463--478},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_2006_31_2_a11/}
}