@article{SM_2018_209_3_a1,
     author = {F. G. Avkhadiev},
     title = {Rellich inequalities for polyharmonic operators in plane domains},
     journal = {Sbornik. Mathematics},
     pages = {292--319},
     publisher = {mathdoc},
     volume = {209},
     number = {3},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2018_209_3_a1/}
}