@article{DAN_1972_206_5_a0,
     author = {A. A. Bogush and F. I. Fedorov},
     title = {On plane orthogonal transformations},
     journal = {Doklady Akademii Nauk},
     pages = {1033--1036},
     publisher = {mathdoc},
     volume = {206},
     number = {5},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_206_5_a0/}
}