@article{MZM_1986_40_1_a4,
     author = {Yu. E. Karpeshina and B. S. Pavlov},
     title = {Zero radius interaction for the biharmonic and polyharmonic equations},
     journal = {Matemati\v{c}eskie zametki},
     pages = {49--59},
     publisher = {mathdoc},
     volume = {40},
     number = {1},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1986_40_1_a4/}
}