@article{RM_1996_51_3_a12,
     author = {A. O. Ivanov and A. A. Tuzhilin},
     title = {Structure of the set of planar minimal networks with given topology and boundary},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {553--554},
     publisher = {mathdoc},
     volume = {51},
     number = {3},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1996_51_3_a12/}
}