Geodesic
Graphic presentations on the lens spaces minimal $DS$-diagrams
Vestnik Chelyabinskogo Gosudarstvennogo Universiteta. Matematika, Mekhanika, Informatika, no. 10 (2008), pp. 108-113

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$DS$-diagram is a three-valent graph on a two-sphere with an identification which glues vertices in fours, edges in threes, faces in twos. Any compact closed 3-manifold can be constructed from the 3-ball by factorizing its boundary according to an appropriate $DS$-diagram. The $DS$-diagrams of lens spaces with minimal number of faces among all known $DS$-diagrams of these manifolds are considered in the work. A few methods of constructing these diagrams as plane graphs with straight edges are described. Advantages of each method are discussed. 
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     title = {Graphic presentations on the lens spaces minimal $DS$-diagrams},
     journal = {Vestnik Chelyabinskogo Gosudarstvennogo Universiteta. Matematika, Mekhanika, Informatika},
     pages = {108--113},
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     number = {10},
     year = {2008},
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     url = {http://geodesic.mathdoc.fr/item/VCHGU_2008_10_a14/}
}
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M. A. Ovchinnikov. Graphic presentations on the lens spaces minimal $DS$-diagrams. Vestnik Chelyabinskogo Gosudarstvennogo Universiteta. Matematika, Mekhanika, Informatika, no. 10 (2008), pp. 108-113. http://geodesic.mathdoc.fr/item/VCHGU_2008_10_a14/