no. 1
Optimal gridpositioning or single facility location on the torus
RAIRO. Operations research, Tome 25 (1991) no. 1, pp. 19-29 
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     author = {Plastria, F.},
     title = {Optimal gridpositioning or single facility location on the torus},
     journal = {RAIRO. Operations research},
     pages = {19--29},
     year = {1991},
     publisher = {EDP-Sciences},
     volume = {25},
     number = {1},
     mrnumber = {1110771},
     zbl = {0732.90057},
     language = {en},
     url = {https://www.numdam.org/item/RO_1991__25_1_19_0/}
}
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Plastria, F. Optimal gridpositioning or single facility location on the torus. RAIRO. Operations research, Tome 25 (1991) no. 1, pp. 19-29. https://www.numdam.org/item/RO_1991__25_1_19_0/

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