@article{MZM_2013_94_6_a3,
     author = {V. Z. Grines and O. V. Pochinka},
     title = {On the {Simple} {Isotopy} {Class} of a {Source--Sink} {Diffeomorphism} on the $3${-Sphere}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {828--845},
     publisher = {mathdoc},
     volume = {94},
     number = {6},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2013_94_6_a3/}
}