@article{ZNSL_1989_170_a4,
     author = {H. Wolf and V. P. Havin},
     title = {Poisson kernel is the only approximative identity asymptotically multiplicative on $H^\infty$},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {82--89},
     publisher = {mathdoc},
     volume = {170},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1989_170_a4/}
}