@article{SM_1995_82_1_a4,
     author = {I. V. Ptitsyna},
     title = {Classification of closed minimal networks on tetrahedra},
     journal = {Sbornik. Mathematics},
     pages = {101--116},
     publisher = {mathdoc},
     volume = {82},
     number = {1},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1995_82_1_a4/}
}