@article{ZNSL_1997_247_a17,
     author = {N. A. Shirokov},
     title = {Concerning an analog of the {Stolz} angle for the unit ball in~$\mathbb C^n$},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {276--297},
     publisher = {mathdoc},
     volume = {247},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1997_247_a17/}
}