@article{IM2_2008_72_1_a3,
     author = {A. O. Ivanov and A. A. Tuzhilin},
     title = {Immersed polygons and their diagonal triangulations},
     journal = {Izvestiya. Mathematics },
     pages = {63--90},
     publisher = {mathdoc},
     volume = {72},
     number = {1},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2008_72_1_a3/}
}