@article{IM2_1995_59_1_a1,
     author = {B. P. Allakhverdiev},
     title = {Extensions of symmetric {Schrodinger} operators with matrix potentials},
     journal = {Izvestiya. Mathematics},
     pages = {45--62},
     year = {1995},
     volume = {59},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1995_59_1_a1/}
}