@article{IM2_1977_11_2_a7,
     author = {A. E. Tumanov},
     title = {A~peak set for the disc algebra of metric dimension~2.5 in the three-dimensional unit sphere},
     journal = {Izvestiya. Mathematics},
     pages = {353--359},
     year = {1977},
     volume = {11},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1977_11_2_a7/}
}