@article{ZNSL_1987_157_a13,
     author = {S. V. Kislyakov},
     title = {A~simplified proof of a~theorem of {J.~Bourgain} on extension of operators},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {146--150},
     year = {1987},
     volume = {157},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1987_157_a13/}
}