@article{SM_1972_17_4_a5,
     author = {E. S. Zukhovitskaya},
     title = {On overdetermined elliptic systems of pseudodifferential equations on a~compact manifold},
     journal = {Sbornik. Mathematics},
     pages = {539--550},
     publisher = {mathdoc},
     volume = {17},
     number = {4},
     year = {1972},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1972_17_4_a5/}
}