@article{IM2_1982_19_2_a8,
     author = {V. L. Popov},
     title = {The constructive theory of invariants},
     journal = {Izvestiya. Mathematics },
     pages = {359--376},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {1982},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1982_19_2_a8/}
}