@article{EXMA_2001__10_4_50067,
     author = {Schwartz, Richard Evan},
     title = {The pentagram map is recurrent.},
     journal = {Experimental mathematics},
     pages = {519--528},
     publisher = {mathdoc},
     volume = {10},
     number = {4},
     year = {2001},
     zbl = {1013.52003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMA_2001__10_4_50067/}
}