@article{DAN_1963_151_3_a23,
     author = {Yu. I. Sirotin},
     title = {Integral rational bases of tensor invariants of crystallographic groups},
     journal = {Doklady Akademii Nauk},
     pages = {564--566},
     publisher = {mathdoc},
     volume = {151},
     number = {3},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_151_3_a23/}
}