@article{UFA_2017_9_1_a4,
     author = {O. Kh. Karimov},
     title = {On coercive properties and separability of biharmonic operator  with matrix potential},
     journal = {Ufa mathematical journal},
     pages = {54--61},
     publisher = {mathdoc},
     volume = {9},
     number = {1},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UFA_2017_9_1_a4/}
}