@article{VMUMM_2012_3_a8,
     author = {E. A. Avksentyev},
     title = {Metric properties of poncelet polygonal lines},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {43--47},
     year = {2012},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2012_3_a8/}
}