@article{SM_1988_60_2_a9,
     author = {A. V. Tyrin},
     title = {The regularity of~maps of {Riemannian} manifolds that minimize the multidimensional {Dirichlet} functional},
     journal = {Sbornik. Mathematics},
     pages = {395--412},
     publisher = {mathdoc},
     volume = {60},
     number = {2},
     year = {1988},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1988_60_2_a9/}
}