@article{SM_2014_205_5_a0,
     author = {E. A. Avksentyev},
     title = {A~universal measure for a~pencil of conics and the {Great} {Poncelet} {Theorem}},
     journal = {Sbornik. Mathematics},
     pages = {613--632},
     publisher = {mathdoc},
     volume = {205},
     number = {5},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2014_205_5_a0/}
}