@article{AFM_2012_37_2_a4,
     author = {Konstantin M. Dyakonov},
     title = {Factoring derivatives of functions in the {Nevanlinna} and {Smirnov} classes},
     journal = {Annales Fennici Mathematici},
     pages = {407--413},
     publisher = {mathdoc},
     volume = {37},
     number = {2},
     year = {2012},
     doi = {10.5186/aasfm.2012.3728},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.2012.3728/}
}