@article{ZNSL_1971_22_a9,
     author = {A. I. Plotkin},
     title = {The continuation of $L^p$-isometries},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {103--129},
     publisher = {mathdoc},
     volume = {22},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1971_22_a9/}
}