@article{RM_2008_63_2_a15,
     author = {F. B. Pakovich},
     title = {On analogues of the {Ritt} theorems for rational functions with two poles},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {386--387},
     publisher = {mathdoc},
     volume = {63},
     number = {2},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2008_63_2_a15/}
}