@article{AA_2006_18_2_a1,
     author = {V. Vasyunin and A. Vol'berg},
     title = {The {Bellman} functions for a certain two-weight inequality: {A~case} study},
     journal = {Algebra i analiz},
     pages = {24--56},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2006_18_2_a1/}
}