@article{AA_2003_15_4_a4,
     author = {A. L. Vol'berg and F. L. Nazarov},
     title = {Heating of the {Beurling} operator and the estimates of its norm},
     journal = {Algebra i analiz},
     pages = {142--158},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2003_15_4_a4/}
}