@article{AUM_2013_67_1_a1,
     author = {Denega, Iryna V.},
     title = {Generalization of some extremal problems on non-overlapping domains with free poles},
     journal = {Annales Universitatis Mariae Curie-Sk{\l}odowska. Mathematica },
     publisher = {mathdoc},
     volume = {67},
     number = {1},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUM_2013_67_1_a1/}
}