@article{VMUMM_2003_4_a1,
     author = {V. V. Kozlov},
     title = {Rationality conditions for the ratio of elliptic integrals and the great {Poncelet} theorem},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {6--13},
     publisher = {mathdoc},
     number = {4},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2003_4_a1/}
}