@article{MZM_1998_63_5_a20,
     author = {I. A. Sheipak},
     title = {Nontrivial fractals in the plane and linear operators with joint spectral radius equal to 1},
     journal = {Matemati\v{c}eskie zametki},
     pages = {797--800},
     publisher = {mathdoc},
     volume = {63},
     number = {5},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1998_63_5_a20/}
}