@article{DAN_1991_320_6_a10,
     author = {S. I. Repin},
     title = {Variational formulations for discontinuous displacement fields in},
     journal = {Doklady Akademii Nauk},
     pages = {1340--1344},
     publisher = {mathdoc},
     volume = {320},
     number = {6},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_320_6_a10/}
}