@article{AA_2004_16_2_a4,
     author = {S. E. Stepanov and I. G. Shandra},
     title = {Garmonic diffeomorphisms of manifolds},
     journal = {Algebra i analiz},
     pages = {154--171},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2004_16_2_a4/}
}