@article{UZKU_2019_161_3_a8,
     author = {A. A. Malyugina and V. V. Shurygin},
     title = {Holonomy pseudogroups as obstructions to equivalence of manifolds over the algebra of dual numbers},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {438--455},
     publisher = {mathdoc},
     volume = {161},
     number = {3},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_2019_161_3_a8/}
}