@article{IM2_1993_40_3_a4,
     author = {I. A. Taimanov},
     title = {On~the~existence of three nonselfintersecting closed geodesics on manifolds homeomorphic to the 2-sphere},
     journal = {Izvestiya. Mathematics },
     pages = {565--590},
     publisher = {mathdoc},
     volume = {40},
     number = {3},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1993_40_3_a4/}
}