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@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/} }
Yu. E. Karpeshina; B. S. Pavlov. Zero radius interaction for the biharmonic and polyharmonic equations. Matematičeskie zametki, Tome 40 (1986) no. 1, pp. 49-59. http://geodesic.mathdoc.fr/item/MZM_1986_40_1_a4/