@article{DAN_1961_138_4_a12,
     author = {V. P. Havin and S. Ya. Havinson},
     title = {Some estimates of analytic capacity},
     journal = {Doklady Akademii Nauk},
     pages = {789--792},
     publisher = {mathdoc},
     volume = {138},
     number = {4},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_4_a12/}
}