@article{SM_2015_206_11_a0,
     author = {E. A. Avksentyev},
     title = {The {Great} {Emch} {Closure} {Theorem} and~a~combinatorial proof of {Poncelet's} {Theorem}},
     journal = {Sbornik. Mathematics},
     pages = {1509--1523},
     publisher = {mathdoc},
     volume = {206},
     number = {11},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2015_206_11_a0/}
}