@article{SM_1980_36_1_a8,
     author = {A. A. Arkhangel'skii},
     title = {Completely integrable {Hamiltonian} systems on a~group of triangular matrices},
     journal = {Sbornik. Mathematics},
     pages = {127--134},
     publisher = {mathdoc},
     volume = {36},
     number = {1},
     year = {1980},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1980_36_1_a8/}
}