@article{DAN_1989_304_4_a16,
     author = {A. A. Grigor'ev and V. I. Kuvshinov and F. I. Fedorov},
     title = {Matrix conditions for the cancellation of anomalies in},
     journal = {Doklady Akademii Nauk},
     pages = {836--840},
     publisher = {mathdoc},
     volume = {304},
     number = {4},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_304_4_a16/}
}