@article{RM_2019_74_2_a5,
     author = {B. S. Bychkov and A. V. Mikhailov},
     title = {Polynomial graph invariants and linear hierarchies},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {366--368},
     publisher = {mathdoc},
     volume = {74},
     number = {2},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2019_74_2_a5/}
}