@article{MZM_1977_21_1_a10, author = {A. Ya. Helemskii}, title = {On the representation of differentiations by {Hamiltonians,} operating from an algebra of local observable spin systems}, journal = {Matemati\v{c}eskie zametki}, pages = {93--98}, publisher = {mathdoc}, volume = {21}, number = {1}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1977_21_1_a10/} }