@article{FPM_2009_15_7_a7,
     author = {A. A. Stepanova and N. V. Trikashnaya},
     title = {Abelian and {Hamiltonian} groupoids},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {165--177},
     publisher = {mathdoc},
     volume = {15},
     number = {7},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2009_15_7_a7/}
}