Geodesic
On the problem of the extremal decomposition of the Riemann sphere
Zapiski Nauchnykh Seminarov POMI, Analytical theory of numbers and theory of functions. Part 10, Tome 185 (1990), pp. 72-95 
G. V. Kuz'mina. On the problem of the extremal decomposition of the Riemann sphere. Zapiski Nauchnykh Seminarov POMI, Analytical theory of numbers and theory of functions. Part 10, Tome 185 (1990), pp. 72-95. http://geodesic.mathdoc.fr/item/ZNSL_1990_185_a6/
@article{ZNSL_1990_185_a6,
     author = {G. V. Kuz'mina},
     title = {On the problem of the extremal decomposition of the {Riemann} sphere},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {72--95},
     year = {1990},
     volume = {185},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1990_185_a6/}
}
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